Exoplanets
Latest about Exoplanets
![four exoplanets orbiting the HR 8799 star](https://cdn.mos.cms.futurecdn.net/ZphpQaR7B2x9BdQqtG2VFg-320-80.jpg)
Exoplanet Atmospheres Reveal 'Peculiar' Fingerprints
By Stephanie Pappas published
Massive planets orbiting a distance star aren't as expected.
![Kepler 37b Exoplanet Illustration](https://cdn.mos.cms.futurecdn.net/Z658UkD83FGqFzE6vFwsWi-320-80.jpg)
Found! Tiny Moon-Size Alien World Is the Smallest Exoplanet
By Elizabeth Howell published
Kepler-37b, the smallest known exoplanet, is about the size of the moon.
![Artist's concept of Gliese 667, one of two multiple-star systems known to host planets below 10 Earth masses.](https://cdn.mos.cms.futurecdn.net/ZTELbdKDMk3fmxm7GVDkqe-320-80.jpg)
Are You There, E.T.? SETI Finds No Alien Signals from Exoplanets
By Elizabeth Howell published
Fewer than one in a million star systems in the Milky Way likely host intelligent life.
![Exoplanets Many Habitable Worlds](https://cdn.mos.cms.futurecdn.net/BQD8yioMqHowLvaqZzjug9-320-80.jpg)
Scientists Unveiling Exoplanet Discovery Wednesday: How to Watch Live
By Tariq Malik published
The Harvard-Smithsonian Center for Astrophysics will unveil the alien planet announcement at 11 a.m. EST.
![Odd Orbit Star HAT-P-7](https://cdn.mos.cms.futurecdn.net/avpvCpzEebLfMnLcaFBLy-320-80.jpg)
Strange Exoplanet's 'Backwards' Orbit Explained by Extra Star, Planet
By Miriam Kramer published
The study of a planetary system might help explain why some planets have odd orbits.
![Double-Star Systems](https://cdn.mos.cms.futurecdn.net/SUP5fdbWFgJAvkJFbJAXjW-320-80.jpg)
Double-Star Systems Can Be Dangerous for Exoplanets
By Mike Wall published
Alien planets born in widely separated, two-star systems are in danger of being booted into interstellar space.
![Exoplanets Many Habitable Worlds](https://cdn.mos.cms.futurecdn.net/BQD8yioMqHowLvaqZzjug9-320-80.jpg)
Exoplanet Catalog Reveals 7 Possibly Habitable Worlds
By Elizabeth Howell published
The Habitable Exoplanets Catalog has seven candidate planets listed so far, and the pace of discovery is increasing, says its founder.
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