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Extrasolar Planets

Intelligent Machines -- On Earth and Beyond

Mario Livio | Posted 02.03.2015 | Science
Mario Livio

Which of the two potential achievements -- the discovery of extraterrestrial intelligent life or the development of human-matching thinking machines -- will constitute a bigger "revolution"?

Super-Ancient Solar System Discovered

The Huffington Post | Macrina Cooper-White | Posted 01.30.2015 | Science

Since it was launched in 2009, NASA's planet-hunting Kepler Space Telescope has identified more than 1,000 exoplanets and almost 4,200 exoplanet "cand...

David Freeman

How A Planet-Hunting Visionary Convinced NASA To Do The Right Thing

HuffingtonPost.com | David Freeman | Posted 10.13.2014 | Science

How many planets are there? Not long ago the answer to that question was simple: eight, or nine if you counted Pluto (now officially a dwarf planet). ...

Smog May Aid Search For Alien Life

LiveScience | Elizabeth Howell | Posted 07.28.2014 | Science

In the search for life beyond Earth, astronomers should look for signs of pollution in the atmospheres of alien planets outside the Earth's solar sy...

Kepler 186f: Is It Inhabited?

Seth Shostak | Posted 06.21.2014 | Science
Seth Shostak

A team of astronomers, after carefully combing data from NASA's Kepler space telescope, has finally nailed a world that might be similar to our own. But is it inhabited? Finding the answer is not easy.

Oddball Planet Discovered Orbiting Distant Star

Space.com | Mike Wall | Posted 01.23.2014 | Science

Astronomers have spotted a hotter and puffier version of Earth circling a distant star. The oddball exoplanet candidate KOI-314c is located about 2...

WATCH: Space Telescope Reveals Big Secret About Little Exoplanet

natureheader | Posted 01.23.2014 | Science

One of the best-studied nearby extrasolar planets — a body just a little larger than Earth — is swaddled in alien clouds, researchers have found. ...

Clear 'Water Signature' Detected On Multiple Alien Worlds

Space.com | Mike Wall | Posted 12.05.2013 | Science

NASA's Hubble Space Telescope has detected water in the atmospheres of five planets beyond our solar system, two recent studies reveal. The five ex...

Alien World Is Like Earth, Only Hellishly Hot

AP | MARCIA DUNN | Posted 10.30.2013 | Science

CAPE CANAVERAL, Fla. -- CAPE CANAVERAL, Fla. (AP) — Scientists have found a planet way out in the cosmos that's close in size and content to Earth ...

How Much Longer Can Earth Sustain Life?

The Huffington Post | Meredith Bennett-Smith | Posted 09.24.2013 | Science

How much longer will the Earth be able to sustain life? Assuming our little blue marble isn't done in by climate change, an asteroid strike, or some o...

E.T. Hunters Get Bad News About Alien Moons

Space.com | Charles Q. Choi | Posted 09.17.2013 | Science

Alien moons around distant worlds may not possess magnetic fields strong enough to protect extraterrestrial life from radiation that may blast it fro...

Record-Setting Exoplanet Casts Doubt On Star Theory

The Huffington Post | Posted 08.07.2013 | Science

A newly seen alien planet sets a new record as the lowest-mass world ever detected around a sun-like star using direct imaging, astronomers report in ...

Alien Planet Hunt To Get Boost From Rare Celestial Event

Posted 06.04.2013 | Science

By: Mike Wall Published: 06/03/2013 03:09 PM EDT on SPACE.com The stars will align for planet hunters twice in the next three years, allowing them...

Other Worlds Eyed For Clues About Our Climate Future

Posted 05.29.2013 | Science

By: Leslie Mullen, Astrobiology Magazine Published: 05/25/2013 09:25 AM EDT on SPACE.com A Comparative Climatology Symposium held at NASA Headquar...

Prolific Planet-Hunting Space Probe Now Ailing

Posted 05.02.2013 | Science

By: Mike Wall Published: 05/01/2013 10:01 AM EDT on SPACE.com Health issues are jeopardizing the planet-hunting work of NASA's prolific Kepler spa...

Milky Way Is Home To HUGE Number Of Earth-Size Planets, Space Agency Says

Posted 01.07.2013 | Science

By: SPACE.com Staff Published: 01/07/2013 01:43 PM EST on SPACE.com This story was updated at 1:55 p.m. EST. The Milky Way hosts at least 17 bill...

Most Exciting Alien Planet Discoveries Of 2012

Posted 12.21.2012 | Science

By: Nola Taylor Redd Published: 12/21/2012 09:59 AM EST on SPACE.com From massive bodies that fell just short of becoming stars to the tiniest sol...

Potentially Habitable Planet Found Orbiting Nearby Star

Posted 02.17.2013 | Science

By: Mike Wall Published: 12/19/2012 12:06 AM EST on SPACE.com A sun-like star in our solar system's backyard may host five planets, including one ...

Why We May Never Get to Alpha Centauri

Athena Andreadis, Ph.D. | Posted 10.29.2012 | Science
Athena Andreadis, Ph.D.

This month astronomers announced that Alpha Centauri B may have an Earth-sized planet in tight orbit. Space enthusiasts were ecstatic, becauseAlpha Centauri is the closest star system to ours. Many expressed the hope that the discovery might spur a space exploration renaissance.

New Satellite To Hunt For Alien Super-Earths

Posted 10.22.2012 | Science

By: SPACE.com Staff Published: 10/19/2012 03:54 PM EDT on SPACE.com The European Space Agency will launch a new satellite in 2017 to study super-E...

Itty-Bitty Alien Solar System Discovered

Posted 10.16.2012 | Science

By: Charles Q. Choi Published: 10/15/2012 03:31 PM EDT on SPACE.com The most crowded alien planetary system found yet possesses five worlds all or...

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 ...