WASHINGTON — A newly discovered planet is eerily similar to Earth and is sitting outside our solar system in what seems to be the ideal place for life, except for one hitch. It’s a bit too big. The ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Beyond our solar system, there’s a whole selection of planets ...

Hundreds of distant planets may be far larger than scientists once believed. New research reveals that many exoplanets found by NASA’s Transiting Exoplanet Survey Satellite (TESS) might have been ...

A thick atmosphere has been detected around a planet that's twice as big as Earth in a nearby solar system, researchers reported Wednesday. The so-called super Earth — known as 55 Cancri e — is among ...

A big parade that’s on tap for Monday morning won’t feature any floats or marching bands. Instead, it will be a planetary parade up in the sky — with six of the planets in our solar system lining up ...

The Sun is an incandescent but benevolent dictator. For billions of years, it’s kept our star system well organized through the influence of its powerful gravity. All the planets revolve around it on ...

On a mountaintop in Chile, excavators have just started work on a construction site. It will soon be home to a powerful new telescope that will have a good shot at finding the mysterious Planet X, if ...

WASHINGTON -- A newly discovered planet is eerily similar to Earth and is sitting outside our solar system in what seems to be the ideal place for life, except for one hitch. It's a bit too big. The ...

Beyond our solar system, there’s a whole selection of planets unlike anything we see around the Sun. In the cosmic candy shop, there are Ring Pops (less magnificent versions of Saturn), Hot Tamales ...