The Space Show by Dr. David Livingston

Please note that both the video and the audio of this program are archived on our Substack page, doctorspace.substack.com. I strongly recommend you watch the video version.We introduced Dr. Ersilia Vaudo, an astrophysicist and author from Paris with a 30-year career at ESA, including roles overseeing relations with NASA. He mentions her book and asks about her background in space and her motivation for writing her book, “The Story of Astrophysics in Five Revolutions.” Our guest started us of by sharing her journey into physics and astrophysics, describing how her early interest in science was nurtured by her family and experiences in nature. She explained that her decision to study physics was motivated by a desire to understand the universe and feel empowered by knowledge. Vaudo emphasizes the transformative nature of studying physics, as it challenges one's preconceptions and experiences. When asked if she saw the Moon landings live on TV, she expressed more interest in the scientific aspects of space exploration rather than the adventure itself. Vaudo also discussed her book on astrophysics, which aims to share the wonder of the field with a general audience by connecting historical events and scientific revolutions.Our discussion covered several key developments in cosmology and physics. Vaudo outlines five major revolutions (her book title) in our understanding of the universe: Newton's unification of terrestrial and celestial physics through gravity, Einstein's special and general relativity theories, Hubble's discovery of the expanding universe, and Dirac's contributions to quantum mechanics. I mentioned a recent theory challenge on a current Hotel Mars program to the Big Bang model, suggesting we might be inside a black hole. Vaudo emphasizes the importance of keeping an open mind to new theories while maintaining a focus on experimental evidence.Vaudo discussed the five revolutions covered in his book, ending with the discovery of antimatter. She explained that modern scientific revolutions often involve teams rather than individual scientists, making storytelling today more challenging. John Jossy asked why dark matter and dark energy weren't included as a sixth revolution. Vaudo said that these topics were addressed in the book's final chapter, describing them as mysteries still being explored. She emphasized that dark energy, in particular, remains a fascinating enigma in our understanding of the universe.Vaudo discussed the challenges in science education and research, highlighting the growing impatience for quick answers and the increasing difficulty in generating new ideas. She emphasized the importance of mathematics as a critical thinking tool and suggests starting math education early to reduce anxiety. Vaudo shares his experience with an association that brings hands-on science experiments to disadvantaged areas, noting how this approach sparks curiosity and engagement in children. She also stressed the need for more experiential learning in primary schools to foster interest in science and mathematics.Dr. Vaudo discussed the influence of Galileo on the history of science and astronomy. She highlighted Galileo's contributions, including his use of the telescope, his intuition about the speed of light, and his pioneering work on relativity. Vaudo emphasized Galileo's bravery in challenging consensus and risking resistance to bring new ideas forward. The conversation touched on topics such as inflation theory, dark energy, and the role of funding in scientific exploration. Vaudo mentioned the importance of investing in science, noting that even basic research can lead to significant practical benefits in the future.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223For real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming Programs:Broadcast 4388: Sunday, June 22: 12 PM PDT; Dr. Karen Lloyd re her book “Intra-terrestrials: Discovering the Strangest Life on Earth”Broadcast 4389: Dr. Karen Lloyd | Sunday 22 Jun 2025 1200PM PTGuests: Dr. Karen LloydDr. Lloyd talks about her new book, "intra-Terrestrials: Discovering the strangest life on Earth."Broadcast 4390: Dr. Saralyn Mark | Tuesday 24 Jun 2025 700PM PTGuests: Dr. Saralyn MarkDr. Mark on advancing human spaceflight and health here on Earth and in space.Broadcast 4391: Hotel Mars with Doug Messier | Wednesday 25 Jun 2025 930AM PTGuests: John Batchelor, Dr. David Livingston, Douglas MessierDoug plans on addressing all things SpaceX, Starship and Elon Musk.Broadcast 4392: BY ZOOM: Dr. Ersilia Vaudo from France | Thursday 26 Jun 2025 930AM PTGuests: Dr. Ersilia VaudoDr. Vaudo will highlight her new book, The Story of Astrophysics in Five Revolutions.Broadcast 4393: Casey Dreier of The Planetary Society | Friday 27 Jun 2025 930AM PTGuests: Casey DreierCasey address the skinny budget for NASA science and space project cutbacksBroadcast 4394: Dr. Young Bay | Sunday 29 Jun 2025 1200PM PTGuests: Dr. Young K. BaeDr. Bay addresses the development of fusion energyLive Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites:Stream Guys https://player.streamguys.com/thespaceshow/sgplayer3/player.php#FastServhttps://ic2646c302.fastserv.com/stream Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe

The Space Show hosted a discussion with Dr. Saralyn Mark, focusing on space medicine, human spaceflight, and the challenges of long-duration space travel. The conversation covered topics such as the impact of space on human health, advancements in space technology, and the potential for space research to benefit medical treatments on Earth. Dr. Mark emphasized the importance of international collaboration, ethical considerations, and continued funding for space exploration to address challenges and unlock new possibilities for human health and space colonization.Dr. Saralyn Mark was welcomed to the Space Show. We began by highlighting her extensive background in medicine and space exploration. Dr. Mark shared her journey from childhood dreams of becoming an astronaut to pursuing a medical career, eventually combining both passions through her work with NASA and her private company, Solamed Solutions. They discussed the challenges she faced as a woman in medicine and space, emphasizing the importance of women in these fields. The conversation also touched on the impact of space travel on human health, particularly in relation to osteoporosis research.David and Sara discussed the advancements and challenges in space medicine, highlighting the integration of space technology into everyday life and the need for public education about space benefits. Dr. Saralyn emphasized the progress made in keeping astronauts healthy in space, despite the risks, and predicted further advancements with precision innovation. They also discussed the relevance of space medicine to human health on Earth, with Dr. Saralyn noting that space provides a unique platform for understanding and addressing health issues on both fronts.Our guest discussed the challenges and ethical considerations of sending children into space, highlighting the risks and the need for further research on the effects of space travel on human development. She emphasized the importance of developing technologies and protocols not only for current astronauts but also for future generations who may travel to other planets. She also addressed concerns about children's health today, noting issues such as type 2 diabetes, obesity, and the impact of fast food on health, as well as the emerging problem of long Covid, which can lead to chronic conditions affecting multiple body systems.We both talked about the importance of space research in understanding human biology and potential treatments, highlighting how space can serve as a platform for studying the immune system, aging, and medication effects. She emphasized that cutting funding for space research would hinder future discoveries and advancements. The conversation touched on the need for tailored countermeasures to reverse aging effects observed in space and the importance of continued research funding.In addition, the discussion focused on the challenges and opportunities of space colonization, particularly on Mars with its 38% Earth gravity. Dr. Saralyn explained that while we have data on microgravity and Earth gravity, we need specialized facilities to study partial gravity effects on human health, with new labs being developed near Orlando and other locations. She outlined three verticals for her company Soloman Solutions: consultancy, education through space explorer summits, and operational medicine to support space missions. David raised questions about the commercial space industry's role and the potential for 3D printing and tissue replication in space to lead to medical breakthroughs on Earth, to which she responded that while these technologies are promising for the future, they are not likely to become mainstream anytime soon.Dr. Mark discussed the importance of nutrition in space, highlighting that while it's crucial for both mental and physical health, space environments present unique challenges such as irradiation of food and changes in smell and taste due to fluid shifts. She explained that astronauts need to exercise 2-2.5 hours daily to maintain muscle and bone mass, and commercial space programs like Starlab are partnering with companies like Hilton to develop food solutions that are both nutritious on Earth and space compatible. Dr. Saralyn noted that while astronauts typically regain their sense of smell and taste upon returning to Earth, maintaining a balanced diet in space requires careful consideration of cultural preferences and the need for enjoyable meals.Near the end of the program, we both talked about the feasibility and challenges of sending humans to Mars, including the need for international collaboration, technological advancements, and ethical considerations around gene modification for space travel. They explored the potential benefits and risks of modifying human genes to enhance health in space, emphasizing the importance of careful regulation and ethical oversight. Sara mentioned ongoing efforts to simulate space environments on Earth and the psychological challenges of long-duration space travel, such as isolation and delays in communication. They also addressed the question of gender differences in space adaptation, noting that while women may have certain advantages, diversity in crew composition leads to better team dynamics and outcomes.In response to a listener question, Sara discussed the potential of hibernation-like states for long-duration space travel, highlighting ongoing research and challenges such as waking up and preventing cellular damage. She also addressed the impact of solar and galactic radiation on space missions, suggesting solutions like better shelters and nutraceuticals to protect astronauts. Ajay raised concerns about simulating partial gravity on Earth, and Dr. Saralyn mentioned new technologies being developed for this purpose. The discussion concluded with our guest emphasizing the need for global collaboration in space exploration and her hope to see a united effort to thrive on and beyond Earth.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223For real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming Programs:Broadcast 4388: Sunday, June 22: 12 PM PDT; Dr. Karen Lloyd re her book “Intra-terrestrials: Discovering the Strangest Life on Earth”Broadcast 4389: Dr. Karen Lloyd | Sunday 22 Jun 2025 1200PM PTGuests: Dr. Karen LloydDr. Lloyd talks about her new book, "intra-Terrestrials: Discovering the strangest life on Earth."Broadcast 4390: Dr. Saralyn Mark | Tuesday 24 Jun 2025 700PM PTGuests: Dr. Saralyn MarkDr. Mark on advancing human spaceflight and health here on Earth and in space.Broadcast 4391: Hotel Mars with Doug Messier | Wednesday 25 Jun 2025 930AM PTGuests: John Batchelor, Dr. David Livingston, Douglas MessierDoug plans on addressing all things SpaceX, Starship and Elon Musk.Broadcast 4392: BY ZOOM: Dr. Ersilia Vaudo from France | Thursday 26 Jun 2025 930AM PTGuests: Dr. Ersilia VaudoDr. Vaudo will highlight her new book, The Story of Astrophysics in Five Revolutions.Broadcast 4393: Casey Dreier of The Planetary Society | Friday 27 Jun 2025 930AM PTGuests: Casey DreierCasey address the skinny budget for NASA science and space project cutbacksBroadcast 4394: Dr. Young Bay | Sunday 29 Jun 2025 1200PM PTGuests: Dr. Young K. BaeDr. Bay addresses the development of fusion energyLive Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites:Stream Guys https://player.streamguys.com/thespaceshow/sgplayer3/player.php#FastServ https://ic2646c302.fastserv.com/stream Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe

Please note that there were audio and technical difficulties with this program My apologies.Dr. Karen Lloyd, author of INTRATERRESTRIALS: Discovering The Strangest Life On Earth, was our guest for this 63-minute program. We explored a variety of strange life forms that she has studied using deep-sea submersibles such as ALVIN. Although we did touch on some land-based life later in the program, most of our discussion focused on organisms found several hundred to several thousand feet below the ocean surface.Early in the conversation, I asked Karen about DNA differences between these deep-sea organisms and surface creatures. She reminded us that her research primarily involves single-celled microbial life, but noted that their DNA is not drastically different from that of more familiar organisms.As a former scuba diver in my younger years, I asked several questions about the experience of deep-sea diving in mini-subs: the technology involved, the comfort level (or lack thereof), visibility, and the challenges of discovering and retrieving samples for study. Karen also shared insights about the crew—typically just three people per dive in ALVIN—the duration of these dives, and the training required to participate. One key takeaway was that many samples are collected from seafloor mud, as the life forms are too small to be seen with the naked eye.Despite ongoing audio issues during the broadcast, we received several excellent listener questions. One listener asked whether the organisms Karen studies are considered extremophiles—a topic we've discussed before on TSS. Don’t miss her answer—it may surprise you. Another caller inquired about any commercial applications for her research or for the microbial life itself. Karen took time to name some of the organisms currently being studied, so listen closely for those details.A listener also raised concerns about ocean pollution and its impact on these life forms. While most of the organisms live too deep to be directly affected, Karen did discuss the broader dangers of plastic and other pollution, stressing that we should take these issues more seriously.Later in the program, we tackled a complex question about whether climate change is affecting these deep-sea environments. Karen gave a detailed response that’s worth hearing in full. I also asked if microbial life differs across the world's oceans. While there is some diversity, she explained that the microbes are generally quite similar across different marine environments. She was also asked about microbial life in freshwater lakes, but noted that this is not a primary focus of her research.As the discussion continued, I asked Karen about the potential benefits to humans from studying these life forms. Her response was thoughtful and informative—another part of the program you won’t want to miss. Before wrapping up, we discussed how these microorganisms contribute to oxygen production. I mentioned that I thought trees were responsible for that, and Karen explained the significant differences. She emphasized how essential deep-ocean microbial life is to sustaining human life with some good examples.Karen dives into all of this and much more in her book, which is an excellent and engaging read. She shares vivid stories that help readers appreciate the science and the importance of this research. While we did experience some audio issues during the show, I encourage you to listen to the entire interview and consider reading her book. This is a truly important subject that deserves our attention.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223For real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming Programs:Broadcast 4388: Sunday, June 22: 12 PM PDT; Dr. Karen Lloyd re her book “Intra-terrestrials: Discovering the Strangest Life on Earth”Broadcast 4389: Dr. Karen Lloyd | Sunday 22 Jun 2025 1200PM PTGuests: Dr. Karen LloydDr. Lloyd talks about her new book, "intra-Terrestrials: Discovering the strangest life on Earth."Broadcast 4390: Dr. Saralyn Mark | Tuesday 24 Jun 2025 700PM PTGuests: Dr. Saralyn MarkDr. Mark on advancing human spaceflight and health here on Earth and in space.Broadcast 4391: Hotel Mars with Doug Messier | Wednesday 25 Jun 2025 930AM PTGuests: John Batchelor, Dr. David Livingston, Douglas MessierDoug plans on addressing all things SpaceX, Starship and Elon Musk.Broadcast 4392: BY ZOOM: Dr. Ersilia Vaudo from France | Thursday 26 Jun 2025 930AM PTGuests: Dr. Ersilia VaudoDr. Vaudo will highlight her new book, The Story of Astrophysics in Five Revolutions.Broadcast 4393: Casey Dreier of The Planetary Society | Friday 27 Jun 2025 930AM PTGuests: Casey DreierCasey address the skinny budget for NASA science and space project cutbacksBroadcast 4394: Dr. Young Bay | Sunday 29 Jun 2025 1200PM PTGuests: Dr. Young K. BaeDr. Bay addresses the development of fusion energyLive Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites:Stream Guys https://player.streamguys.com/thespaceshow/sgplayer3/player.php#FastServhttps://ic2646c302.fastserv.com/stream Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe

We welcomed Dr. Robert Bishop of Texas A&M University to The Space Show for a wide-ranging discussion on space exploration, technology, and education—highlighting Texas A&M’s expanding leadership in space science, engineering, and research.After introducing the program and reminding listeners that The Space Show is a nonprofit, listener-supported initiative, I welcomed our guest, Dr. Robert Bishop, Vice Chancellor and Dean of Engineering at Texas A&M. Dr. Bishop began by outlining the university’s major space and science research initiatives. While state-supported, he explained, much of the research is funded through contracts and grants from NASA, the National Science Foundation (NSF), and other agencies. A key development is a new 400,000-square-foot research facility under construction near NASA’s Johnson Space Center, featuring simulated lunar and Martian environments for both academic and industry use.Dr. Bishop addressed concerns about potential federal science funding cuts. He expressed confidence in adapting through more efficient funding models, such as forming a 501(c)(3) and expanding contract-based research. He emphasized that contracts should supplement—not replace—traditional grant funding, especially for open-ended basic research. He also called for a reevaluation of indirect cost structures to better sustain future research.We explored Texas A&M’s national security-related research, including work in cybersecurity, hypersonics, and space defense. Dr. Bishop underscored the university's partnerships with federal and military organizations and emphasized the need to safeguard critical infrastructure amid rising global competition in space. He expressed concern about the uncertain future of U.S. space dominance.Dr. Bishop also introduced the TAMU Spirit platform, developed by Aegis Aerospace, which will host up to 12 experiments every six months aboard the International Space Station (ISS). While acknowledging the ISS’s limited remaining operational timeline, he confirmed that contingency planning is underway for future commercial platforms.On space launch, I raised concerns about reliance on SpaceX and recent Starship test failures. Dr. Bishop noted that launch systems fall outside his expertise but acknowledged the importance of diversified infrastructure.We discussed Texas A&M’s new space engineering program, which began as a master’s degree in Fall 2023 and will expand to a bachelor’s program in Fall 2024. The program integrates disciplines such as agriculture, architecture, and public policy, with a focus on sustaining human life on the Moon and Mars. While the university is not involved in space medicine or weapons research, it conducts foundational research in hypersonics and maintains active collaborations with astronauts and researchers at JSC.Our conversation also touched on the broader Texas space ecosystem, with contributions from UT Austin, Rice, and Baylor. Dr. Bishop emphasized the importance of interdisciplinary research—including studies on the environmental impact of space exploration and the use of small modular nuclear reactors for lunar power. In response to a listener question, he noted that while A&M is not currently working on space-based solar power, they are actively researching nuclear technologies for both Earth and space applications.Dr. Bishop spoke to the surging demand for engineering education at Texas A&M, which enrolls over 25,000 engineering students but still cannot meet national workforce needs. On the topic of AI, he described early efforts to create a comparative framework across disciplines, with ethical considerations woven throughout the curriculum—not as standalone courses, but through an integrated, vertical approach. He stressed academia’s responsibility in helping industry navigate the ethical challenges of space exploration.In response to one of the many listener questions for this program, we discussed commercial opportunities in cislunar space, including communication, landing, and timing infrastructure. Dr. Bishop described cislunar space as a testbed for Earth-beneficial technologies like space medicine and advanced systems. We also explored concepts such as cycling trajectories between Earth and the Moon, space tourism, and large-scale orbital construction. While he believes current engineering capabilities can support such ambitions, he pointed to the need for more robust launch infrastructure Dr. Bishop highlighted Texas A&M’s contributions to food production research aboard the ISS and noted the ongoing challenges of limited resources and talent shortages. He spoke positively about the university’s close ties with government stakeholders and voiced support for bold space development goals. Before concluding, we briefly touched on student enthusiasm, space settlement, O'Neilian colonies, superstructures, and the emerging potential of space medicine.We invite you to share your thoughts and questions for Dr. Bishop on our Space Show blog or Substack page: doctorspace.substack.com.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223For real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming Programs:Broadcast 4388: Sunday, June 22: 12 PM PDT; Dr. Karen Lloyd re her book “Intra-terrestrials: Discovering the Strangest Life on Earth”Broadcast 4389: Dr. Karen Lloyd | Sunday 22 Jun 2025 1200PM PTGuests: Dr. Karen LloydDr. Lloyd talks about her new book, "intra-Terrestrials: Discovering the strangest life on Earth."Broadcast 4390: Dr. Saralyn Mark | Tuesday 24 Jun 2025 700PM PTGuests: Dr. Saralyn MarkDr. Mark on advancing human spaceflight and health here on Earth and in space.Broadcast 4391: Hotel Mars with Doug Messier | Wednesday 25 Jun 2025 930AM PTGuests: John Batchelor, Dr. David Livingston, Douglas MessierDoug plans on addressing all things SpaceX, Starship and Elon Musk.Broadcast 4392: BY ZOOM: Dr. Ersilia Vaudo from France | Thursday 26 Jun 2025 930AM PTGuests: Dr. Ersilia VaudoDr. Vaudo will highlight her new book, The Story of Astrophysics in Five Revolutions.Broadcast 4393: Casey Dreier of The Planetary Society | Friday 27 Jun 2025 930AM PTGuests: Casey DreierCasey address the skinny budget for NASA science and space project cutbacksBroadcast 4394: Dr. Young Bay | Sunday 29 Jun 2025 1200PM PTGuests: Dr. Young K. BaeDr. Bay addresses the development of fusion energyLive Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites:Stream Guys https://player.streamguys.com/thespaceshow/sgplayer3/player.php#FastServhttps://ic2646c302.fastserv.com/stream Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe

John and I welcomed Dr. Enrique Gaztañaga from the University of Portsmouth in the UK. Dr. Gaztañaga presented an alternative theory of the universe that challenges the established Big Bang model. Since the James Webb Space Telescope (JWST) came online, observations have raised questions about the standard Big Bang theory—questions that Dr. Gaztañaga has been at the forefront of addressing through his new theoretical framework, which is still under active investigation and referred to as the Black Hole Universe Theory.As you listen to this two-part program, we encourage you to visit Dr. Gaztañaga's excellent website at https://darkcosmos.com for more details and a comprehensive list of his published articles. You can also read his latest peer-reviewed work in Physical Review D.To briefly summarize from his website: “The Big Bang was not the start of everything, but rather the outcome of a gravitational collapse that formed a very massive black hole — followed by a bounce inside. This idea — which we call the Black Hole Universe — offers a radically different view of cosmic origins, yet it is grounded entirely in known physics and observations.”Be sure to check out his papers and learn more about this bold and intriguing theory. We’re certain Dr. Gaztañaga will be a returning guest on Hotel Mars and The Space Show in the future.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223For real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming Programs:Broadcast 4389: Sunday, June 22: 12 PM PDT; Dr. Karen Lloyd re her book “Intra-terrestrials: Discovering the Strangest Life on Earth”Live Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites:Stream Guys https://player.streamguys.com/thespaceshow/sgplayer3/player.php#FastServ https://ic2646c302.fastserv.com/stream Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe

Bill Gowan joined us on this program to share his experience participating in The Planetary Society’s annual Day of Action on Capitol Hill. This year’s event took place in March and included training sessions, group feedback meetings, and visits to numerous congressional offices, primarily engaging with staffers from both the Senate and the House. While the Day of Action had its own structured agenda focused on space advocacy, Bill also brought his personal priorities with him advocating for three key goals: exploring other worlds, defending Earth, and finding life.During the first 15–20 minutes of the show, Bill walked us through the process of preparing for and participating in the Day of Action. He discussed the training which was led by Casey Dreier and Jack Kiraly (The Planetary Society’s government relations representative in Washington, D.C.), and what it was like to engage directly with congressional staffers. His detailed narrative offered a strong introduction and background, providing listeners with valuable insights into the experience of citizen lobbying for space.Bill took several listener phone calls and responded to numerous email questions, as well as my own. Many of the questions focused on how receptive congressional staffers were to discussions about space, and whether they seemed genuinely interested. A recurring theme was the concern over proposed NASA budget cuts outlined in the President’s so-called “Skinny Budget.” Bill provided helpful context, highlighting how these proposed cuts compared to previous budgets and emphasizing the growing resistance in Congress to such reductions—especially those targeting science programs. One particularly interesting exchange came when I asked Bill if he could tell whether a member of Congress was motivated by genuine interest in space and science—or simply liked spending taxpayer dollars. Bill’s thoughtful response to that question is not to be missed.Bill also identified the specific members his group met with. While it's uncertain how any individual member will vote when the full budget bill comes up, Bill reported encouraging signs of support for preserving key NASA programs. Of course, much will depend on the final form of the bill and the political pressure applied during the legislative process.Later in the show, Bill made a strong case for civic engagement—encouraging all of us to talk to our elected officials, not just about space but about issues we care about more broadly. His explanation of why this matters was compelling and extended well beyond space advocacy. Before we wrapped up, Bill was asked how he would respond to someone who claims, “The country is broke—we have to cut spending, and that includes space.” His answer to this hypothetical but very real concern was both pragmatic and passionate.Finally, Bill was asked if he encountered any “space cadets” among the staffers or members of Congress. He smiled and shared that many expressed enthusiasm for space—citing childhood memories of Apollo, sci-fi movies and TV shows, and a general fascination with the cosmos. He believes many in Congress, even those not on space committees, have a “secret space cadet” gene.We thanked Bill for doing a fantastic job of sharing his experience with us and look forward to having him back next March to hear how his next Day of Action unfolds—as an enthusiastic, unpaid, and deeply committed space advocate.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223For real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming Programs:Tuesday, June 17: No program today | Tuesday 17 Jun 2025 700PM PTGuests: Dr. David LivingstonNo program today.Broadcast 4387: Hotel Mars with Dr. Enrique Gaztanaga | Wednesday 18 Jun 2025 930AM PTGuests: John Batchelor, Dr. David Livingston, Dr. Enrique GaztanagaNew black hole theory, Earth and moreBroadcast 4388 VIA ZOOM: Dr. Robert Bishop | Friday 20 Jun 2025 930AM PTGuests: Dr. Robert BishopVia Zoom; Texas A&M in space, AI, Cyber, space defense tech and moreBroadcast 4389: Dr. Karen Lloyd | Sunday 22 Jun 2025 1200PM PTGuests: Dr. Karen LloydDr. Lloyd talks about her new book, "intra-Terrestrials: Discovering the strangest life on Earth."Live Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites:Stream Guys https://player.streamguys.com/thespaceshow/sgplayer3/player.php#FastServhttps://ic2646c302.fastserv.com/stream Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe

John and I welcomed back Eric Berger of Ars Technica to Hotel Mars for a one-segment update and discussion on SpaceX, Elon Musk, and Starship. We began by asking Eric what successful Starship testing would look like for SpaceX. He acknowledged that it's difficult to define clear success metrics at this stage.We then discussed the upcoming Demo Test #10, potential hardware and assembly issues, plus Eric elaborated on some of the challenges SpaceX might face. The conversation touched on Starship’s role in NASA's planned Moon missions, the importance of testing in low Earth orbit (LEO), and the need to develop and demonstrate in-orbit refueling capabilities. Eric spoke about the types of fuel Starship uses and highlighted the need to address issues like boil-off during storage in space.Before concluding, we asked Eric about the ongoing feud between Elon Musk and President Trump. Eric said it was hard to predict how things would unfold but thought Musk might walk back some of his comments. He emphasized the strategic importance of SpaceX to the U.S. government in both civil space and national security domains. While the FAA could theoretically delay permits in response to Musk’s remarks, Eric didn’t think that was likely at this time.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223For real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming Programs:Broadcast 4387: By Zoom: Friday, 6-20 @!09:30 AM PDDTDr. Robert Bishop, Texas A&M Dean on AI, Cyber, Defense Tech & SpaceBroadcast 4388: Sunday, June 22: 12 PM PDT; Dr. Karen Lloyd re her book “Intra-terrestrials: Discovering the Strangest Life on Earth”Live Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites:Stream Guys https://player.streamguys.com/thespaceshow/sgplayer3/player.php#FastServ https://ic2646c302.fastserv.com/stream Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe

We welcomed Dave Barnhart, CEO and Co-founder of Arkisys, Inc., back to the program to share updates since his last appearance on May 2, 2023. The conversation focused on developments in the growing field of space servicing and the evolving commercial space industry.Dave provided a comprehensive update on Arkisys’s Port project, highlighting increased interest from the U.S. Space Force, the Space Development Agency, and other key government and private stakeholders. He discussed concepts such as deorbit augmentation and post-launch integration, offering specific examples of potential business opportunities emerging from these efforts.R&D and funding were key parts of the discussion. Dave explained how Arkisys is reducing risk through terrestrial experimentation, with a strong emphasis on rendezvous and transport capabilities via their Cutter vehicle. Listener questions focused on space logistics, satellite servicing markets, and the economic implications of declining launch costs. Dave noted that as launch prices continue to fall, the economics of on-orbit servicing become significantly more challenging and competitive.Later in the program, Dave introduced two major industry consortiums: COSMIC, a U.S.-only initiative, and CONFERS, which has a global scope despite being based in the U.S. He emphasized the importance of establishing industry norms and standards—an area of growing importance as the space economy matures.As the discussion wrapped up, Dave outlined Arkisys’s five-year plan, which includes deploying up to three Port modules, potentially connected, along with using the Cutter vehicle to ferry payloads to and from the Port. While human spaceflight is not currently part of their roadmap, he expressed interest in supporting human spaceflight companies with the Port platform in the future.Dave also addressed the use of AI in Arkisys operations—be sure to catch his insights on that topic. Before concluding, he shared updates on internships and future hiring plans. Earlier in the conversation, he enthusiastically described Arkisys's mentorship of student teams focused on in-space construction, noting a significant year-over-year increase in participation, underscoring growing interest in this sector.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223For real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming ShowsBroadcast 4383: ZOOM: Marcus Chown, UK author | Sunday 08 Jun 2025 1200PM PTBroadcast 4384: Dave Barnhart, CEO of Arkysis | Tuesday 10 Jun 2025 700PM PTBroadcast 4385 Hotel Mars with Eric Berger | Wednesday 11 Jun 2025 930AM PTBroadcast 4386: ZOOM: Bill Gowan | Friday 13 Jun 2025 930AM PTSunday, June 15: No program in honor of Father's Day | Sunday 15 Jun 2025 1200PM PTLive Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites:Stream Guys https://player.streamguys.com/thespaceshow/sgplayer3/player.php#FastServ https://ic2646c302.fastserv.com/stream Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe

The Space Show welcomed award-winning author and former Caltech radio astronomer Marcus Chown to discuss his latest book, A Crack in Everything: How Black Holes Came in from the Cold and Took Cosmic Center Stage. Chown shared his journey from early inspiration—thanks to a childhood astronomy book and the moon landing—to his current career as a science writer/journalist. He also noted the success of his previous book, The Ascent of Gravity, named the Sunday Times Science Book of the Year.Chown traced the transformation of black holes from theoretical curiosities to essential cosmic players. He described the 1971 discovery of the first black hole in the Cygnus X-1 system and explained how supermassive black holes were surprisingly identified before stellar-mass ones, thanks to observations by the Hubble Space Telescope. He clarified that while black holes themselves emit no light, matter falling into them creates bright emissions.Chown highlighted the overlooked contributions of women in astronomy, especially Louise Webster, co-discoverer of black holes. He emphasized black holes’ vital role in galaxy formation and the intriguing theory that their presence may influence the emergence of life.Chown detailed how light elements formed in the Big Bang, while heavier ones like uranium and thorium emerged in supernovae. The 2017 detection of gravitational waves from neutron star mergers revealed the origin of precious metals like gold and platinum, solving a long-standing mystery. He also explained that gamma-ray bursts, once detected by military satellites, are linked to these cataclysmic events. This was in response to a question by Dr. Kothari. In addition, his discussing regarding uranium, thorium, and plutonium helped to explain that only specific isotopes are fissile due to nuclear forces. These elements contribute to Earth's heat and helium production. He praised physicist Lise Meitner, co-discoverer of nuclear fission and developer of the liquid drop model, who was nominated 49 times for the Nobel Prize but never awarded.Chown addressed how James Webb Space Telescope findings—such as unexpectedly bright early galaxies and potential newborn supermassive black holes—challenge current galaxy formation theories. He explored speculative ideas, including advanced civilizations possibly harnessing black hole energy, and the elusive role of dark matter in cosmic structure.I had Marcus if he had any concerns about what may be a U.S. pull back from science and engineering for budgetary reasons. I wanted to know if thought there were other players that might step in and fill the void left by the U.S. were the pull back to happen. Marcus expressed concern over a potential U.S. retreat from scientific leadership, emphasizing the difficulty other nations would face in filling that gap. He reflected on Roy Kerr’s 1963 rotating black hole solution, overshadowed at the time by quasar discoveries. Looking ahead, he encouraged continued exploration and proposed future discussions on dark energy.I closed by reminding listeners that The Space Show is a listener-supported 501(c)(3) nonprofit and encouraged donations to help sustain the program.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentOur Toll Free Line for Live Broadcasts: 1-866-687-7223For real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming ShowsBroadcast 4384: Dave Barnhart, CEO of Arkysis | Tuesday 10 Jun 2025 700PM PTBroadcast 4385 Hotel Mars with Eric Berger | Wednesday 11 Jun 2025 930AM PTBroadcast 4386: ZOOM: Bill Gowan | Friday 13 Jun 2025 930AM PTSunday, June 15: No program in honor of Father's Day | Sunday 15 Jun 2025 1200PM PTLive Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites: Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe

My initial question to guest Jim Meigs focused on the ongoing conflict between Elon Musk and Donald Trump and its potential implications for U.S. space policy and programs, particularly NASA’s future leadership and priorities. Together with our guest, listeners explored the challenges and uncertainties facing NASA’s human spaceflight efforts, including budget constraints, shifting mission timelines, and the increasing need for private sector involvement. We also discussed possible alternatives for advancing U.S. space exploration, such as enhanced collaboration between commercial space companies, all within the context of the Musk-Trump feud. Challenges to science and robotic missions were also talked about.Moving forward, I invited Jim to discuss his April paper, U.S. Space Policy: The Next Frontier, which is linked on our blog. In doing so, he highlighted the unexpected change in NASA’s leadership. One potential nominee for NASA Administrator is Gen. Steven Kwast, a past guest on The Space Show. I briefly summarized his previous appearances, noting his strong advocacy for both national security space and commercial space development. Jim also commented extensively on Jared Isaacman, who was widely expected to be nominated as NASA Administrator before his nomination was recently withdrawn. Listeners had much to say on this topic.Jim raised concerns about the political risks of SpaceX’s current dominance in space policy. He warned that a future Democratic administration could seek to limit NASA’s collaboration with Elon Musk, underlining the importance of maintaining multiple commercial partners to mitigate both political and operational vulnerabilities. Jim advocated for NASA to concentrate on basic research while outsourcing launch capabilities to private industry. He also addressed the need for FAA reform in both aviation and space sectors and urged NASA to adopt a more entrepreneurial mindset—though he acknowledged that congressional resistance could make such change difficult.Listeners, along with Jim, had much to say about the withdrawal of Isaacman’s nomination so that topic was a frequent one on this program. Jim explained that although Isaacman enjoyed Senate support, there was a lack of clarity as of the time of this program as to why his nomination was withdrawn. There was much speculation on this issue mentioned on this program. Jim further pointed out that delays in confirming a new NASA administrator—possibly stretching over several months due to the power transition and Senate confirmation process—could be costly for NASA and the broader space community. There was some debate over the authority of the current acting administrator, with Jim suggesting she was exercising a cautious and diplomatic approach in her interim role.We touched on other broader NASA priorities, particularly the tension between lunar and Martian mission planning. Jim commented on the challenges of integrating the Starship HLS with the SLS for Artemis missions. Both our guest and listeners expressed skepticism about the proposed timelines. Budget concerns, the fate of ongoing programs, and NASA’s long-term direction were also part of the conversation.Jim left the program at the bottom of the hour for a hard break. However, Zoom participants and livestream listeners continued the discussion in an open-format session, covering additional points and expanding on earlier topics raised during Jim’s appearance.Special thanks to our sponsors:Northrup Grumman, American Institute of Aeronautics and Astronautics, Helix Space in Luxembourg, Celestis Memorial Spaceflights, Astrox Corporation, Dr. Haym Benaroya of Rutgers University, The Space Settlement Progress Blog by John Jossy, The Atlantis Project, and Artless EntertainmentFor real time program participation, email Dr. Space at: drspace@thespaceshow.comThe Space Show is a non-profit 501C3 through its parent, One Giant Leap Foundation, Inc. To donate via Pay Pal, use:To donate with Zelle, use the email address: david@onegiantleapfoundation.org.If you prefer donating with a check, please make the check payable to One Giant Leap Foundation and mail to:One Giant Leap Foundation, 11035 Lavender Hill Drive Ste. 160-306 Las Vegas, NV 89135Upcoming ShowsBroadcast 4383: ZOOM: Marcus Chown, UK author | Sunday 08 Jun 2025 1200PM PTBroadcast 4384: Dave Barnhart, CEO of Arkysis | Tuesday 10 Jun 2025 700PM PTBroadcast 4385 Hotel Mars with Eric Berger | Wednesday 11 Jun 2025 930AM PTBroadcast 4386: ZOOM: Bill Gowan | Friday 13 Jun 2025 930AM PTSunday, June 15: No program in honor of Father's Day | Sunday 15 Jun 2025 1200PM PTLive Streaming is at https://www.thespaceshow.com/content/listen-live with the following live streaming sites:Stream Guys https://player.streamguys.com/thespaceshow/sgplayer3/player.php#FastServhttps://ic2646c302.fastserv.com/stream Thank you for subscribing. Share this episode. Get full access to The Space Show-One Giant Leap Foundation at doctorspace.substack.com/subscribe