Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

Astronomers may have found a candidate for Planet Nine. This planet is beyond Neptune. The finding could be the first ...

Caroline Delbert is a writer, avid reader, and contributing editor at Pop Mech. She's also an enthusiast of just about ...

Astronomers using the James Webb Space Telescope (JWST) have confirmed the existence of the first known planet closely ...

Scientists using JWST have identified WD 1856+534 b—the coldest exoplanet yet—circling a dead star, revealing surprising ...

Scientists think they’ve detected a new planet beyond Neptune. Find out why experts believe 'Planet X' might support alien ...

The ninth planet in our solar system was first brought up as a possibility when two astronomers from the California Institute ...

"It's like trying to spot a fish by looking for ripples in a pond, rather than trying to see the fish itself." ...

Scientists believe that they've discovered a new planet which may be part of the Earth's solar system. Thanks to advancing ...