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Viking 1 and 2 | In 1976, the two Viking units landed on the surface of Mars. With the data of Curiosity the scenario that has been discussed since the release of Phoenix data, gets a new boost, McKay and his colleagues find: Because the youngest Mars in addition to the organic substances on the molecules of chlorobenzene on which The reaction of carbon with perchlorates occurs and, in fact, the unit Viking-2 landing also found traces of chlorobenzene, reports the team after a fresh look at data held on microfilm of 40 years.
Planetary scientists are therefore convinced that the scenario of burned organic molecules is true, but they certainly can not be: after all, scientists also know that the furnaces of the four J's In the 19th century, the old landing units were contaminated with organic material from the earth, which, among other things, was trapped in leftover detergents. Thus, the possibility remains that it is these molecules that reacted with perchlorates to produce chlorobenzene.
However, the earth's carbonaceous substances should have reacted even at lower temperatures, which does not fit well with the data, scientists say. There was also no evidence of chlorobenzene in the Viking-1 data, and the oven contained detergent residues that could have reacted with perchlorate.
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