Short Wave What The Universe Is Doing RIGHT NOW
Sep 14, 2022
Delve into the monumental shift in astronomy as Edwin Hubble reveals the existence of other galaxies and the expanding universe. Discover the fascinating balloon analogy, illustrating how galaxies are racing away from one another. Explore the ongoing debates over the universe's expansion rate and advancements from the Gaia space observatory. The conversation also unpacks the enigmatic role of dark energy in shaping our cosmic understanding. Join the journey to grasp humanity's position in the ever-expanding universe.
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Expanding Universe
- Edwin Hubble's research revealed the existence of galaxies beyond the Milky Way.
- This discovery complicated astronomy by raising further questions about the universe's expansion.
Redshift and Expansion
- Hubble's discovery showed galaxies moving away from ours, confirmed by the redshift phenomenon.
- Redshift, similar to the Doppler effect with sound, indicates galaxies' movement away as the universe expands.
Center of the Universe
- The universe's expansion doesn't have a center; space itself expands, making everything move away from everything else.
- Observing from any galaxy would show the same expansion, as space stretches between objects.