We May Have Found Life On Mars In 1976 — And Then Killed It ☞ All That’s Interesting

“The Viking landers, a pair of NASA space probes equipped with both imaging technology and instruments to test for life, touched down on Mars in 1976. There, they began conducting a series of biological tests that to this day remain the only experiments to test for life directly on another planet.
Unfortunately, these tests saw contradicting results that have baffled researchers for decades.”