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Latest News About Alien Planets
An alien planet orbits a star other than our sun, and is sometimes called an "exoplanet." Learn more about the types of alien planets, including exoplanets and extrasolar planets, and get the latest news.
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The star Gliese 581 in the constellation Libra has a planet in its habitable zone. New research shows the Goldilocks planet could have liquid water on its surface, and an Earth-like atmosphere.
Astronomers have discovered a whole new class of alien planet: Jupiter-mass worlds that float through space unbound to any discernible host star.
A new survey has begun looking for intelligent extraterrestrial life on the most Earth-like alien planets discovered to date.
Astronomers have pinned down some details of an exotic nearby alien planet that's almost as dense as lead.
NASA's STEREO solar satellites ability to accurately monitor the brightness of variable stars is giving scientists an invaluable tool in discovering exoplanets and studying star inner structure; this video illustrates measurements from 4 stars.
Luke Skywalker's home planet of Tatooine is a vividly realized alien world, but it may be missing one key detail: black plants.
Studying radio emissions from auroras of Jupiter-like planets could be another technique for detecting exoplanets.
Hunting down alien planets isn't just for professional astronomers anymore.
While some astronomers doubt the existence of the "first potentially habitable" alien world Gleise 581g, its co-discoverer holds fast.
Kepler investigator discusses the latest finds and how it's likely to shape our search for life elsewhere in the galaxy.
A Q & A with astronomer Geoff Marcy, who has had a hand in discovering more alien planets than anybody else.
The newly discovered Kepler-10b isn't the first alien planet that astronomers have announced is rocky. But they're more sure about Kepler-10b's composition than they've been before, because they know its host star so well.
SETI Institute experts address four pivotal issues on the topic of intelligent life beyond Earth and how to systematically and scientifically look for it.
Space-science researchers made a number of extraordinary discoveries in 2010, including finding what may or may not be the first habitable alien world and uncovering clues to the nature of dark matter.
The alien world Gliese 581g has been getting a lot of attention recently, but a case is building for its neighbor planet as a good candidate for extraterrestrial life.
An alien star has now been discovered to have an extra planet that astronomers so far cannot explain. A fourth planet has been imaged orbiting the bright, very young star.
A huge, scorching-hot alien planet boasts surprising amounts of carbon, suggesting that worlds beyond our own solar system may be far more diverse than scientists had imagined, according to a new study.
Scientists haven't found ET, but the discovery of a microbe that can thrive on arsenic should greatly broaden the search for life beyond Earth, according to experts.
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