Top news for December 21, 2008

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What is the longest possible walk on Earth?

On This Day In Space: May 25, 2008: NASA's Phoenix spacecraft lands on Mars

International Space Station: Live updates

NASA's James Webb Space Telescope mission — Live updates

How Omicron Is Different Than Delta

SpaceX Dragon cargo ship to depart space station today after weather delay. How to watch it live.

Trump supporters exhibit greater cognitive rigidity and less interpersonal warmth than supporters of liberal candidates, study finds

Bioengineers Have Modeled The Workings of The World's Most Basic Synthetic Life Form

Webb Space Telescope: Uncovering Hidden Parts of Our Solar System

Dragon Departure From Space Station Delayed Due to Adverse Weather