On this day in history, August 20, 1975... NASA launched its planetary probe, Viking 1, toward Mars. Just two weeks later, Viking 2, was launched. The two probes were to explore two different areas of Mars. The probes beamed back the very first pictures from the surface of the red planet. Also on this day in history, August 20, 1977... NASA launched its Voyager 2 space probe. Launched 16 days before its twin, Voyager 1, the Voyager program was designed to study the outer planets. However, both probes have since gone beyond our solar system. In about 40,000 years, Voyager 1 will be in the constellation Camelopardalis, while and Voyager 2 will be in the constellation of Andromeda. Each Voyager space craft contains the famous Golden Record that features music from across the world. As Carl Sagan noted, "The spacecraft will be encountered and the record played only if there are advanced space-faring civilizations in interstellar space, but the launching of this 'bottle' into the cosmic ocean says something very hopeful about life on this planet."