Why wide field matters for dark energy

Gary explains weak lensing needs, statistical samples, and how Roman maps cosmic structure to probe dark energy.

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Episode notes

Assuming everything goes well, sometime in late 2026, NASA’s next major space observatory will launch: The Nancy Grace Roman Space Telescope.

Assuming the launch and deployment go well, it will map large areas of the universe to understand why cosmic expansion is accelerating and how galaxies and dark matter evolved.

It will also survey stars to discover thousands of planets, including cold and free-floating worlds, while testing technology for the direct imaging of planets around other stars.

Learn more about the Nancy Grace Roman Space Telescope and how it could revolutionize astronomy on this episode of Everything Everywhere Daily.

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