Add Yahoo as a preferred source to see more of our stories on Google. On October 29, 1991, the Galileo spacecraft flew by the asteroid Gaspra on its way to Jupiter. ‘On This Day in Space’ Video Series ...

A new analysis of data from NASA’s Galileo spacecraft reveals a subsurface “ocean” of magma–either molten or partially molten–beneath the surface of Jupiter’s volcanic moon Io. The finding, from a ...

WASHINGTON (voa) – One of the most remarkable chapters in the history of planetary exploration ended Sunday, September 21, 2003, at 1857 UTC when the American spacecraft Galileo plunged to its demise ...

On this date, Jan. 17, 2002, the Galileo probe made it’s 33 rd pass of Jupiter’s moon, Io. After Voyager 1’s pass in 1979, Io was dubbed the most volcanically active place in the solar system. Galileo ...

On Aug. 28, 1993, NASA's Galileo spacecraft flew by the asteroid Ida on its way Jupiter. Galileo was the first spacecraft to fly by an asteroid in the asteroid belt. Ida was actually the second one it ...

A new finding of ammonia on the icy surface of Jupiter's moon Europa could have important implications for the search for ...