In 1976, NASA's Viking landers became the first spacecraft to successfully operate on the surface of Mars with experiments ...

A half-century after the Viking landers touched down on the Red Planet, the debate over whether they found signs of life ...

Add Yahoo as a preferred source to see more of our stories on Google. Mars may have hosted microbes adapted to extreme dryness, but NASA's Viking experiments added water and heat that could have ...

James Tillman ’58, SM ’61, began designing instruments to study Martian weather as an MIT student. When NASA decided to shut ...

As the search for life on Mars continues – with promising potential biosignatures recently identified by NASA at the Bright Angel formation – there are a few scientists out there who think we may have ...

Add Yahoo as a preferred source to see more of our stories on Google. Fifty years after Viking 1 landed, NASA's search for life on Mars is moving from red soil into the planet's thin skies. (CREDIT: ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The idea of Mars being host to extraterrestrial life, either currently ...

New images from NASA’s Mars Reconnaissance Orbiter show three additional NASA spacecraft that have landed on Mars: the Spirit rover active on the surface since January 2004 and the two Viking landers ...

Dual NASA Viking landers searched for life on Mars in 1976. Credit: NASA July 20 marked the 50th anniversary of one of the biggest robotic spaceflight achievements in NASA’s history: the landing of ...

Could NASA’s Viking missions have wiped out life on Mars before we even knew it existed? According to an expert at Daily Galaxy, startling theory suggests that our search for Martian life may have ...

It was America’s bicentennial, July 4, 1976, and NASA was hoping not to see fireworks. After a 10-month traverse through space, the Viking 1 lander was ready to become the first spacecraft to operate ...