On December 7th, skywatchers are in for a treat asthe Moon will travel across the sky accompanied by the brilliant planet ...

It is a cosmic enigma that has left astronomers scratching their heads: a mysterious object, hurtling into our solar system ...

Despite their liquid water and potential for habitability, these moons are very different environments from Earth. On Earth, ...

Jupiter's four Galilean moons will line up in front of Jupiter in the early morning sky on Aug. 8. The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

On July 6, 1938, an American astronomer named Seth Barnes Nicholson discovered Jupiter's moon Lysithea. Nicholson spotted Lysithea from Mount Wilson Observatory in California, where he had previously ...

This first-ever complete map of Jupiter's volcanic moon Io released on March 19, 2012, was created using data and images from NASA's Galileo spacecraft, (which studied Jupiter and its moons between ...

A comet from another star system will swing by Mars on Friday as a fleet of spacecraft trains its sights on the interstellar visitor. We already know a decent amount about how planets form, but moon ...

The original version of this story appeared in Quanta Magazine. Scott Bolton’s first encounter with Io took place in the summer of 1980, right after he graduated from college and started a job at NASA ...

Be sure to look up for one of October's most beautiful sky pairings Cheng Xin/Getty On Monday, Oct. 13, into early Tuesday, Oct. 14, the moon and Jupiter will appear side by side just before midnight ...

Artist’s impression of the migration of Titan and the tilt of Saturn. Credit: Coline SAILLENFEST / IMCCE Two scientists from CNRS and Sorbonne University working at the Institute of Celestial ...