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Are UFOs Alien? No!

I'm fed up. Yet again, a few days ago, someone told me they saw a UFO in the early morning sky and immediately assumed it is unquestionable evidence that aliens exist and that they are visiting Planet Earth, raping and pillaging the locals! Full story

Weinstein Company responds to "sabotage" claims

LOS ANGELES (Hollywood Reporter) - The Weinstein Company has officially responded to a lawsuit by two animated filmmakers who claim that Harvey and Bob Weinstein botched the release of computer-animated movie "Escape from Planet Earth" and then paid $500,000 in hush money to keep the dispute quiet o Full story

Scientists Dubious Over Claim of Alien Life Evidence in Meteorite

This article was updated at 4:50 p.m. ET. The recent announcement by a NASA scientist of evidence for alien life in meteorites from outer space has created a firestorm of controversy that researchers say is unlikely to die down anytime soon. Full story

R.I.P. Possibly Habitable Planet Gliese 581g? Not So Fast, Co-Discoverer Says

Even as some astronomers start shoveling dirt on the much-heralded "first potentially habitable" alien world – a planet called Gliese 581g – its co-discoverer is vigorously defending the find. Full story

How Scientists Know Alien Planet Kepler-10b is a Small, Rocky World

This story was updated at 10:16 p.m. ET. SEATTLE — Astronomers announced the discovery today (Jan. 10) of the first "unquestionably rocky" alien world — a planet called Kepler-10b. Full story

Alien Planet Speeds Up Parent Star

  A Jupiter-like alien planet that feeds momentum to its host star may help astronomers understand how a class of solar systems form and evolve, scientists report. Full story

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More thrill-seekers encountering big game

Earth-Like Planet Can Sustain Life


  Jupiter puts on celestial spectacle

Star gazers are being treated to a cosmic show as Jupiter makes its closest pass in a generation to planet Earth. NBC's Brian Williams reports.

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Related Photos

Planet graphic
Planet graphic

This graphic shows the 1,235 candidate planets reported so far by NASA's Kepler mission, in proportion to their parent stars. For comparison's sake, our own sun is shown as well. It's just below the top row on the right, with Jupiter and Earth silhouetted against the disk.