NASA might have killed life on Mars

NASA's Viking missions in the 1970s were groundbreaking, marking the first time humanity sent spacecraft to Mars with the ...
A grassy field next to NASA's Johnson Space Center is getting an otherworldy makeover. Officials gathered Friday to ...
TL;DR: NASA's Viking 1 spacecraft, which landed on Mars in 1975, aimed to test for life using water-based methods.
NASA's Perseverance Mars rover spots a scattering of bizarre bright white pebbles of a mysterious composition and origin.
Firming up plans to go to Mars would be fine, so long as it is not done at the expense of returning to the moon.