
Want a sneak peek of "Bad Universe"? Watch Phil Plait ponder an alien invasion, abuse hardy bacteria and explain why we think there might be extraterrestrial life in this collection of clips from the show.

"Bad Universe: Alien Attack!" premiers on Wednesday Oct. 6 at 10pm. Don't miss it!

Just because we haven't found life, doesn't mean we don't have our theories for where life might be hiding.

Scientists can't determine if Gliese 581 g is indeed endowed with life, but they don't expect to have to wait too long to find similar worlds.

As a sample of microbes survive a record-breaking stint in space, could they aid our space-faring dreams?

Red orbs dripping molten metal, giant cigar-shaped objects, and fully illuminated discs are among the descriptions of the unidentified flying objects that have been seen hovering over nuclear weapon sites for the last 65 years.

Where are all the intelligent extraterrestrials? Our biggest threat to long-term survival may be cosmic boredom.

In the Discovery Channel documentary "Into the Universe with Stephen Hawking", the world-famous physicist goes on the record about his concern for attracting the wrong kind of attention in our cosmic neighborhood.

Ray Villard isn't losing any sleep worrying about awaking one morning to see an alien mothership hovering over Washington D.C.

As The Science Channel begins its groundbreaking "Through the Wormhole" documentary series, Discovery News addresses one of the big questions asked in the series: "Are we Alone?"
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