Space Mission Timeline

Viking 1-2

Aug 20, 1975

Orbited Mars and explored surface

Voyager 1-2

Sep 16, 1977

Discovered Saturn's general area and found rings and magnetic fields

Galileo

Jun 23, 1989

Orbited venus and earth, found red shallow pits.

Magellan

Nov 11, 1989

Circumnavigated earth and took radar images

Mars Globar Surveyor

Feb 15, 1996

Discovered Mars and circled the poles.