Scientists find that planets need more than water to support life. Too little water may cause long-term overheating and ...

How much water do habitable exoplanets need for life as we know it to exist? This is what a recent study published in The ...

In a new study, University of Washington researchers show that an Earth-sized planet likely needs at least 20 to 50% of the ...

The Chandra X-ray telescope and other observatories are being used to study stars that could potentially harbor habitable planets. Future observatories will use the data to narrow down the list for ...

6 billion years old and home to more than 100 billion stars. This reality suggests there is likely a mind-boggling number of potentially habitable planets. According to NASA's latest estimates, ...

Relative sizes of the newly discovered habitable-zone planets and Earth. Left to right: Kepler-69c, Kepler-62e, Kepler-62f and Earth (except for Earth, these are artists' renditions). Image credit: ...

NASA's Kepler Space Telescope has now identified 1,235 candidates for planethood, including several entire solar systems and some potentially habitable planets. The discovery should keep astronomers ...

Located about 39 light-years from Earth, the TRAPPIST system resembles a miniature version of our solar system: The star, an ultracool red dwarf, and all its planets would comfortably fit inside the ...