Top news for December 21, 2008

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Earth Is Surrounded by 1,000-Light-Year Wide Bubble – Source of All Nearby, Young Stars

Here’s how scientists pulled off the first pig-to-human heart transplant

Remembering faces and names can be improved during sleep

Look up! A 'potentially hazardous' asteroid will safely zip by Earth on Jan. 18

Astronomy Jargon 101: Kirkwood Gaps

The Milky Way's supermassive black hole is leaking gas

New Evidence of Gravitational Wave Background Permeating All of Spacetime

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

NASA's James Webb Space Telescope mission — Live updates

At-Home Coronavirus Tests Are Inaccessible to Blind People