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 ...

A half-century after the Viking landers touched down on the Red Planet, the debate over whether they found signs of life continues. The tension was palpable at NASA’s Jet Propulsion Laboratory as ...

Add Yahoo as a preferred source to see more of our stories on Google. Lest you think that billionaire entrepreneur Elon Musk has put his dreams of sending humans to Mars on hold, think again. In ...

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 ...

A thin atmosphere and other factors have left Mars' soil in rough shape, but the quest continues for signs of life, even if it's extinct. NASA/JPL-Caltech/MSSS What if we aren’t alone in the universe?

SpaceX plans to send a crew of private astronauts on a mission to fly around Mars without landing. Cryptocurrency billionaire Chun Wang will lead the Mars mission, as well as a separate lunar flyby ...