
By some counts as much as 96% of everything in the universe comes from dark matter and dark energy. And, up to now, both are completely invisible. Few in the field question this theory, but could there be alternatives? Dean chats with Professor Stacy McGaugh from the Department of Astronomy at Case Western Reserve University to learn more.
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Posing for a Picture with the Earth (with astronaut Tracy Dyson)

What did NASA find on Asteroid Bennu? (with Dr. Daniella Mendoza DellaGiustina)

Bringing the universe down to Earth (with Kat Troche)

3000 Astronomers, One Thrilling Event
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