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

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

Using two infrared space telescopes and a 23-year gap, scientists may have spotted a mysterious, slow-moving object beyond ...

A new look through decades-old data has unveiled some of the most compelling evidence yet of a hidden ninth planet in the far ...

The ongoing search for an additional planet at the solar system's edge has identified a new candidate, potentially ...

A Falcon 9 rocket launched SpaceX 's Starlink 6-75 mission Thursday night (May 1) from Cape Canaveral Space Force Station ...

Observations of exoplanets typically provide astronomers little more than an orbit, a mass and a radius. If the radius and ...

Catch some morning meteors, see the Moon reach First Quarter, and watch Mars visit the Beehive in the sky this week.

A Soviet-era spacecraft meant to land on Venus in the 1970s is expected to soon plunge uncontrolled back to Earth.

Former England captain Owen Farrell will lead Racing 92 into their all-French Challenge Cup semi-final against Lyon, while ...