Thirty years ago this week, two Swiss astronomers announced that they had spotted the first known planet orbiting a Sun-like ...

— -- Astronomers on Monday reported the discovery of an Earth-like planet outside the solar system whose size and distance from its own star put it in the "habitable" zone and make for a surface ...

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

After marking the 30th anniversary of the discovery of the first exoplanet around a sun-like star, we now look forward to what the next 30 years might offer.

CAPE CANAVERAL, Fla. -- An eighth planet has been found in a faraway solar system, matching our own in numbers. Even more amazing, machines and not humans made the discovery. NASA joined with Google ...

There’s a rule of thumb that can come in handy when you hear about new planet discoveries from the Kepler space mission. If they’re talking about a handful of new worlds orbiting distant stars, it’s ...

Thirty years ago, on a crisp October day in 1995, two Swiss astronomers changed the course of cosmic history. Michel Mayor ...

It's several times larger than Earth and 600 light years away, but a newly discovered planet, Kepler-22b, is also said to be 72 degrees--and NASA's Kepler mission has named it as a planet that's just ...

NASA's Kepler mission, which has been searching the skies for Earth-like planets since 2009, has confirmed the discovery of a whopping 715 new planets orbiting around 305 stars. That bring the count ...

Space-watchers saw the handwriting on the wall months ago, but now it’s official: NASA’s Kepler spacecraft, by far the most successful planet-hunting telescope in history, isn’t coming back. Engineers ...

Space scientists look back on three decades of exoplanet discoveries—from rows of massive ‘super-Earths‘ to worlds with ...