Add Yahoo as a preferred source to see more of our stories on Google. This NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy. Everything on ...
Doesn’t seem like much of a brainteaser, does it? Everyone knows the sky darkens at night because the sun sets … or more accurately, because our part of planet Earth rotates away from the sun, and ...
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How the universe began and keeps growing
This problem has stumped scientists for thousands of years. In this video, we explore: - Why is the sky dark? (00:53) - Is the Universe Infinite? (02:18) - Solving Olber’s Paradox (05:32) - What is ...
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