Living up to its name, Mercury is the fastest planet in the solar system, speeding along at about 29 miles per second and ...

Recent research indicates Mercury, the solar system's smallest planet, is shrinking due to its cooling interior. As Mercury's ...

Since its fiery birth nearly 4.5 billion years ago, Mercury, the smallest planet in our solar system, has been slowly ...

Mercury, the smallest planet in the solar system, has spent billions of years quietly getting even smaller. Since its fiery ...

Mercury, the smallest planet in our solar system, has a magnetic field that has intrigued scientists for decades. Recent ...

On Aug. 21, a stellar alignment of planets will illuminate the night sky for the last time until the year 2028 ...

Kenna Hughes-Castleberry is the Content Manager at Space.com. Formerly, she was the Science Communicator at JILA, a physics ...

Get ready for the rare 'planet parade' on August 25, 2025! Six planets, Saturn, Jupiter, Venus, Mercury, Uranus, and Neptune, will align before dawn.

Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper ...