00:04Scientists and astronomers have been actively looking for life outside of Earth for decades.
00:09However, according to astrobiologists with the Technical University in Berlin,
00:12there's a good chance we already did, and accidentally killed it.
00:16When the Viking landers initially touched down on Mars in 1976,
00:20one of their primary objectives was to discover organic life.
00:23They found chlorinated organics at the time.
00:26However, experts believed it was simply cleaning product contamination.
00:29Since then, scientists have discovered that those compounds are native to Mars.
00:33However, they still haven't determined whether or not they were created via biological or non-biological processes.
00:39And the Viking landers' instrumentation also had to heat the materials they gathered to separate out compounds,
00:45meaning biologicals could have been destroyed by the very means meant to test whether they were present at all.
00:50They also conducted a test involving pyrolytic release, exposing Martian material to water.
00:55This was meant to get a reaction from any plant-like organisms.
00:57However, some researchers say this test, like the others, was ill-conceived,
01:01as plants on Mars could have evolved to prefer dry conditions,
01:04and exposing them to an abundance of water may have simply drowned them.
01:08There's a lot of people sitting in the estate season.
01:13There was a lot of challenges to help you in that education is really hard to eigenlijk.
01:13If you turn on a thing,
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