Sifting through observations from tens of thousands of distant stars, astronomers say they have discovered the first definitive Earth-sized planet that orbits in a habitable zone where water could ...

Two of the earliest Earth-ish exoplanet finds are now more exciting targets in the search for habitable worlds beyond this rock. Eric Mack has been a CNET contributor since 2011. Eric and his family ...

Scientists today announced the discovery of Kepler-186f, a faraway planet that’s perhaps the most Earth-like yet discovered. It’s the same size as our home world, and at the right distance from its ...

Scientists have discovered a new planet which is extremely similar to Earth and could be home to extraterrestrial life. Kepler-186f is almost exactly the same size as the Earth and has temperatures ...

Only Slate Plus members can gift Slate stories. Become a member to share 10 free articles a month. I have some cautiously exciting exoplanets news: Astronomers have announced the discovery of a planet ...

NASA confirms the discovery of an Earth-sized planet that may have potential for life, but its sun is dimmer than ours. Here's what an evening stroll on a beach on Kepler-186f might be like. Eric Mack ...

A newly discovered planet may be the most Earth-like yet found in another solar system, scientists believe. Kepler-186f is almost the same size as the Earth and occupies its star's "habitable zone" ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Seth Shostak is a Senior Astronomer with the SETI Institute. He hosts the Big Picture Science ...

Scientists using NASA’s Kepler telescope have found the first Earth-size planet orbiting its star at just the right distance for water to exist on its surface. The finding, reported in this week’s ...