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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 planet HD 40307g, 44 light-years away, is seven times the Earth's mass and could have liquid water on its surface.
A newly discovered “super-Earth” planet, HD 40307g, is in the “Goldilocks Zone;” just the right place to support liquid water. It resides in a system of six worlds orbiting a, stable, elderly dwarf star 44 light years away.
Asteroid belts like the one between Mars and Jupiter appear to be rare beyond our solar system.
Here's a brief rundown of the spookiest things in space, from vampire stars to zombie planets.
This artist's concept space wallpaper depicts an itsy bitsy planetary system -- so compact, in fact, that it's more like Jupiter and its moons than a star and its planets.
Fomalhaut b exists after all, according to a new study.
In 2008, astronomers thought they'd found a planet orbiting Fomalhaut b, 25 light-years away in in the Piscis. But further studies discredited the find. Now, a reanalysis of Hubble observations has confirmed the detection.
HARPS works by looking for telltale "wobbles" in a star, caused by an orbiting planet gravitationally tugging on the star.
Thirsty for more information on the hunt for habitable planets outside our solar system? Exoplanet app offers features for space enthusiasts and scientists alike.
The recent discovery of an Earth-size world in the next star system over could help get the ball rolling.
The newly discovered Earth-size planet is alluring, but San Franciscans are wary about interstellar travel.
Here's a look at how alien planet Alpha Centauri Bb stacks up by the numbers.
Astronomers have discovered an Earth-size planet orbiting one of the nearest stars to our sun: Alpha Centauri B.
It would take a robotic probe using current technology about 40,000 years to reach Alpha Centauri Bb.
Scientists have discovered a roughly Earth-size planet in Alpha Centauri, at 4.3 light-years away the closest star system beyond the sun. Should we send a probe there?
European researchers have detected a planet – just slightly more massive than Earth – orbiting very close to Alpha Centauri B, a sun-like star only 4.3 light-years from our Sun. Orbiting once every 3.2 days, the planet is not in the habitable zone.
The newfound world is too hot to host life, but its existence hints that other planets may be found in the system as well.
See images of the closest alien planet yet found.
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