Top news for December 21, 2008

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Interstellar comet 3I/ATLAS makes its closest approach to Earth tonight: Here's what you need to know

Launch of Japan's Michibiki 5 navigation satellite scrubbed late in countdown

Arctic Report Card Marks Record Temperatures and Rainfall in Arctic

Europe's Ariane 6 rocket launches its 1st pair of Galileo navigation satellites (video)

NASA's MAVEN spacecraft is still silent at Mars — and apparently is spinning, too

Steven Spielberg finally reveals 1st trailer for new UFO film 'Disclosure Day', and now we're terrified

Penguins Become Prey for the Pumas of Patagonia

NASA Completes Next-Gen Telescope, And It Could Soon Reveal Whether We're Alone

Strange, Record-Breaking Gamma-Ray Explosion Lasted 7 Hours and Defies Explanation

New AI Model Is Shockingly Good at “Reading” Human Minds