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Alien Worlds

Sure-Fire Sign Of Alien Life May Be No Such Thing, Scientists Say

| Sid Perkins | Posted 05.01.2014 | Science

Call it the cosmic version of fool’s gold. What was once considered a sure-fire sign of life on distant planets may not be so sure-fire after all, ...

Is THIS The Way We'll Identify Alien Life?

| Angus Chen | Posted 03.13.2014 | Science

Earth’s atmosphere is heavy—it’s what keeps water from flying off into space. So astronomers looking for alien worlds that can harbor life have...

Exoplanets: The New Age in Planetary Science

Dr. Sten Odenwald | Posted 05.10.2014 | Science
Dr. Sten Odenwald

At the same time that astronomers stole back Pluto, they delivered a bounty of new worlds to ponder. Thanks to arduous ground-based studies of nearby stars, and to the dazzling successes of NASA's Kepler mission, we now have a catalog of over 1,700 "new" planets orbiting hundreds of other stars.

Planet-Hunting Spacecraft Finds 'Biggest Haul Ever'

| Clara Moskowitz | Posted 02.27.2014 | Science

A huge new haul of planets has joined the tally of alien worlds discovered by NASA's Kepler space telescope, scientists announced today. All of the ne...

Alien Planets More Like Earth Than We Thought?

Space.com | Tanya Lewis | Posted 01.25.2014 | Science

WASHINGTON — The alien worlds known as "super-Earths" may be more like our own planet than previously thought, a new study suggests. Super-Earths ...

LOOK: Year's Top Exoplanet Discoveries Include Some Pretty Freaky Places

Space.com | Mike Wall | Posted 01.25.2014 | Science

While astronomers didn't bag that elusive first "alien Earth" in 2013, they made plenty of exciting exoplanet discoveries during the past year. Here'...

Astronomers Tally HOW MANY Alien Worlds!?

Space.com | Mike Wall | Posted 09.29.2013 | Science

Just two decades after discovering the first world beyond our solar system, astronomers are closing in on alien planet No. 1,000. Four of the five m...

Search For Alien Life Needs Broader Focus, Astronomer Says

Posted 05.03.2013 | Science

By: Mike Wall Published: 05/02/2013 02:08 PM EDT on SPACE.com Scientists searching for signs of life beyond our solar system should keep an open m...

Earth's 'Twin' Could Be Discovered Next Year, Astronomer Predicts

Posted 12.29.2012 | Science

By: Mike Wall Published: 12/27/2012 12:08 PM EST on SPACE.com The first truly Earth-like alien planet is likely to be spotted next year, an epic...

Alien Planetary System Looks Like Our Own

Posted 07.25.2012 | Science

By: Mike Wall Published: 07/25/2012 01:04 PM EDT on SPACE.com Astronomers have discovered an alien solar system whose planets are arranged much ...

New Device May Transform Search For Alien Planets

Posted 05.31.2012 | Science

By: Nola Taylor Redd Published: 05/30/2012 06:51 PM EDT on SPACE.com Astronomers searching for alien planets may be a step closer to finding tru...

Alien Planet 'Headcount' Yields Big Surprise

Posted 03.28.2012 | Science

By: Clara Moskowitz Published: 03/28/2012 08:04 AM EDT on SPACE.com There should be billions of habitable, rocky planets around the faint red st...