Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Back in 1976, the dual NASA ...

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 or long ago in the past, has beguiled scientists ...

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 ...

The redemption of Viking: Did the 50-year-old mission to Mars find life or not? How NASA’s 1975 mission to Mars led to decades of scientific controversy and confusion over the existence of life on ...

Fifty years ago, NASA’s Viking missions to Mars made groundbreaking attempts to detect life on the Red Planet. While the missions initially returned negative results, a new study published in the ...

When Vikings landed on Lindisfarne's shores in 793, slaughtering the local English populace and pillaging the monastery of valuable relics beyond their cultural comprehension, they ushered in a new ...

Finding life beyond Earth would be a major scientific discovery with significant implications for all areas of science and human thought. Yet, only one direct search for extraterrestrial life has ever ...

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 ...

DENVER, CO., July 20, 2006 — The National Aeronautics and Space Administration’s (NASA) Viking 1 mission to Mars captured the world’s imagination 30 years ago when the first U.S. spacecraft to ever ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Joel S. Levine, William & Mary (THE CONVERSATION) Finding life beyond the Earth would ...