On this date, Jan. 7, 1610, astronomer Galileo Galilei, with a homemade telescope, noticed three points of light near Jupiter. Initially believing they were distant stars, Galileo’s repeated ...

Each of Jupiter's other 91 official moons has a diameter greater than 0.6 mile (1 kilometer) — but only 57 have names, and just eight have regular, nearly round orbits.

Jupiter moons Callisto and Ganymede are among the biggest in the solar system, and potential grounds for liquid water and alien life. NASA's JUICE mission will probe them for signs of both.

It may be cold this month, but now is a great time to get outside and explore Jupiter’s beauty and might. The fifth planet will not only reach opposition on Dec. 7, it will also be at perigee ...

On Sept. 21, 2003, NASA's Galileo mission to Jupiter and its moons came to an end. After 14 years of exploration, the Galileo spacecraft intentionally fell into Jupiter and disintegrated in the ...

LOS ANGELES -- NASA's Galileo spacecraft was set to make its last flyby of one of Jupiter's moons early today, marking the likely end of the science-gathering part of its 13-year mission. Galileo ...

A stock photo shows Jupiter surrounded by its moons. ... clear conditions will treat them to a view of the Galilean satellites—the four largest moons of Jupiter, first discovered in 1610 by Galileo.

Jupiter's four best-known moons are the Galilean moons, discovered by Galileo Galilei in 1610. They are named Ganymede, Callisto, Io and Europa, after figures in Greek mythology associated with ...

Each of Jupiter's other 91 official moons has a diameter greater than 0.6 mile (1 kilometer) — but only 57 have names, and just eight have regular, nearly round orbits.