For centuries, astronomers have wondered whether planets similar to Earth orbit nearby stars. In the past three decades, advances in telescope technology and space-based observatories have transformed ...

When astronomers announced Kepler-452b, they were not just adding another distant world to a growing catalog. They were pointing to a planet that orbits a star much like our own, in a region where ...

The rocky planet circling the closest star to the sun got hammered by a superpowerful flare last year, a new study reports. That's a bit of bad news for anyone hoping that the alien world, known as ...