The most significant change since those 1970's experiments were conducted was the discovery of high levels of perchlorate on Mars. Perchlorate, plus abiotic oxidants, explains the Viking results ...

v=hxHw5MzsDok After landing on Mars, Viking 1 and Viking 2, executed four experiments ... A small amount of Martian soil was scooped up by the lander and placed into a chamber.

In a separate NASA statement later the same day, the agency said lander ... Mars,” Nicky Fox, NASA associate administrator for science, said in the agency statement. The early end of the IM-2 ...

In the 1970s, NASA’s Mariner 9 and Viking 2 were the first missions to spy features that suggested the presence of an ancient ocean on Mars. Utopia Planitia dates to the Hesperian Period ...

after a failed mission from Britain's Beagle 2 in 2003, according to Reuters. Produced by Leon Siciliano More from Tech The European-led Mars lander is approaching the Red Planet as part of the ...

Fast forward to today, a new paper tackles and reconsiders the results of the Viking Biology experiments. "The discovery of perchlorate on Mars by the Phoenix mission has provided a basis for ...