German astronomer Simon Marius is best remembered for his disputes with Galileo Galilei over priority for discovering Jupiter ...

New measurements from NASA's Juno probe have seemingly put to bed the possibility of a magma ocean beneath the surface of Io.

As the largest planet in our Solar System, Jupiter's grandeur is visible to the naked eye and through simple telescopes, ...

Jupiter will be at its brightest all year on Saturday, Dec. 7. Break out your binoculars for a chance at spotting its four ...

Four tiny specks of light close by the giant planet are the biggest of the Jupiter’s 95 moons, Nigel Henbest writes ...

Transits, occultations, eclipses, and shadow transits of the jovian moons are perfect events for telescopic viewing.

Jupiter will rise opposite the sun this weekend, making the gas giant appear even brighter and larger in our sky.

A Cold Moon hangs in the sky while Jupiter still shines bright and the Geminid meteor shower peaks in the sky this week.

Venus dazzles as the "Evening Star," Jupiter reaches its brightest for the year, and the Geminid meteor shower peaks under challenging moonlit skies.

Earth will align between the Sun and Jupiter, creating a rare astronomical event known as Jupiters opposition.

Jupiter on Saturday will shine at its brightest for the year ... Io and Europa. The four "Galilean moons" were named after Italian astronomer Galileo Galilei, who is thought to have discovered them in ...