Several days ago, NASA’s Astronomy Picture of the Day was the impressive “Io: Moon Over Jupiter.” At left is a portion of photo, which was taken by the Cassini spacecraft. Jupiter’s moon Io [EYE-oh] was discovered by Galileo in 1610. He named it for Io the mythological character — a nymph who was seduced by Zeus, then turned into a cow. The name Io doesn’t have a known meaning, and it’s rare in the U.
An active volcanic eruption on Jupiter's moon Io was captured in this image taken by NASA's Galileo spacecraft. Read Post
These color maps of Jupiter were constructed from images taken by the narrow-angle camera onboard NASA's Cassini spacecraft on Dec. 11 and 12, 2000, as the spacecraft neared Jupiter during its flyby of the giant planet. Cassini was ... Read Post