rocky worlds like our own are abundant in our galaxy. — Alien landscapes: 15 places on Earth that look exoplanetary — Planet classification: How to group exoplanets — 10 weird water worlds ...

Their results, published in The Astronomical Journal this week, suggest that an Earth-like planet orbits one in every four sun-like stars. Totaled up, that means there could be up to 10 billion ...

Seven of the 10 newfound Earth-size planets circle stars that are just like ours, not cool dwarf ones that require a planet be quite close to its star for the right temperature. That doesn't mean ...

NASA has identified 10 planets orbiting ... the surface of a rocky planet. "The Kepler data set is unique, as it is the only one containing a population of these near Earth-analogs – planets ...

We still don’t have any idea what the planets look like, or if water in any form actually exists on them. Still, filtering out the most likely life-supporting planets is a huge step towards ...

Now astronomers have detected the ruins of ancient planets around two unusual white dwarf stars, including an Earth-like world that existed almost 10 billion years ago. When most stars ...