Did 40-year-old Viking experiment discover life on Mars?
Friday, October 21, 2016 - 08:31
in Astronomy & Space
(Phys.org)—In 1976, two Viking landers became the first spacecraft from Earth to touch down on Mars. They took the first high-resolution images of the planet, surveyed the planet's geographical features, and analyzed the geological composition of the atmosphere and surface. Perhaps most intriguingly, they also performed experiments that searched for signs of microbial life in Martian soil.