Exoplanets
- Astronomy
Earth-sized planet found in star’s habitable zone
Astronomers have found a potentially habitable Earth-sized planet around a cool red star.
- Space
Exoplanet oxygen may not signal alien life
Oxygen in an exoplanet atmosphere may come from water and ultraviolet light, not alien life.
- Astronomy
Exoplanet water seen in new light
Astronomers used a new technique to characterize the atmosphere of a gas giant exoplanet.
- Astronomy
Kepler space telescope data uncovers 715 new planets
Astronomers used a new tool to quickly confirm the detection of exoplanets.
- Astronomy
Earth-mass planet resembles a mini-Neptune
KOI-314c, an exoplanet 200 light-years away, is about 60 percent larger than Earth but made mostly of gas.
- Astronomy
Year in Review: Death of a planet hunter
The Kepler space telescope finishes a brilliant career.
- Astronomy
Billions and billions of Earth-sized planets call Milky Way home
Using Kepler data, astronomers estimate that a sizeable fraction of the galaxy’s sunlike stars have Earth-sized planets that could support liquid water.
- Astronomy
Astronomers explain planets’ backward motion
Giant planets in distant orbits may be reversing the direction of their closer-in neighbors.
- Astronomy
An Earth-sized hell circles faraway star
Kepler-78b, an Earth-sized, extremely hot exoplanet made of rock and iron, is the smallest with known diameter and mass.
- Astronomy
Clouds may keep exoplanets cool
Even when close to their stars, other worlds could harbor liquid water.
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