Jupiter’s moon was found to have a liquid ocean under a thick crust of ice.
The Galileo probe made the discovery.
Source
Space Shuttle Discovery completed its last-ever mission and made its final landing onto Kennedy's runway at 11:57 am EST.
Comet Shoemaker–Levy 9 collides with Jupiter.
Europe's Planck spacecraft found evidence that our universe is 13.8 billion years old.
NASA launched the Pioneer 11 space probe to study the asteroid belt & the environment around Jupiter and Saturn.
NASA's Mariner 6 space probe successfully launched from Cape Canaveral, Florida.
