December 7, 1995: Galileo Reaches Jupiter
On December 7, 1995, NASA's Galileo spacecraft arrived at Jupiter, becoming the first craft to orbit an outer planet.
On December 7
December 7, 1972: Apollo 17 Leaves for the Moon -- the Last Time
On December 7, 1972, Apollo 17 lifted off for the Moon, the last crewed mission ever to leave Earth orbit.
December 7, 1787: Delaware Becomes the First State
On December 7, 1787, Delaware's convention voted 30-0 to ratify the U.S. Constitution, making it the first state in the Union.