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Astronomy Cast

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Feb 20, 2023

Astronomy Cast Ep. 670 - Governing Space: The 1967 Outer Space Treaty & More!

by Fraser Cain & Dr. Pamela Ga

Streamed live on Feb 13, 2023.

The Universe was inaccessible for most of human history, but the first tentative steps to space in the 20th Century made humanity realize that science fiction was becoming science...

Feb 13, 2023

Astronomy Cast Ep. 669: Challenges to Dark Energy

by Fraser Cain & Dr. Pamela Gay

Streamed live on Feb 6, 2023.

It’s been over 20 years since astronomers first discovered that the expansion of the Universe is accelerating thanks to dark energy. And in these decades, astronomers still don’t have much evidence for...

Feb 6, 2023

Astronomy Cast Ep. 668: The Crisis In Cosmology

by Fraser Cain & Dr. Pamela Gay

Streamed live on Jan 30, 2023.

Astronomers have made extremely accurate measurements of the expansion rate of the Universe and come up with different results. And the error bars for the observations don’t overlap, so there’s something...