Today is the 40th anniversary of the Viking Lander on Mars! Sending an orbiter and a lander to Mars was a great achievement and NASA did it twice. It wasn’t without trouble but both the orbiters and the landers were successful! Today we take landers on Mars, and even rovers, for granted. Viking landed in a time when other missions failed. Russian Mars 3 beat Viking to Mars but only lasted a few seconds. The Viking program is one of NASA’s greatest and sparked mine and many others interest in space exploration!
Sky & Telescope: 40th Anniversary of Viking’s Red Planet rendezvous
Lockheed Martin: Viking Lander celebrates 40 years of success
The Planetary Society: Map of all Mars landing sites