They discover a basic amino acid for the life in a comet
Investigators of the NASA have found the amino acid wisteria in one of the samples that the Stardust sounding picked up in the 2004 in the tail of the comet Wild 2, to 390 million kilometers of the Earth. This finding reinforces the hypothesis that the components of the life could arrive at the Earth from the deep space.
The samples of gas and dust, collections in a small container had with a ultraspongy material, were brought to the Earth by the sounding in a trip of two years. It dropped them to Stardust in parachute in the desert of Utah in the 2006.
One thinks that comets as Wild 2 contains conserved particles good of material that dates from the principle of the Solar System, makes approximately 5,000 million years, and that they could contain tracks on the formation of the Sun and planets.
The initial detection of the wisteria, most common the 20 amino acids in proteins of the alive Earth beings, knew the last year, but the scientists have taken several months in confirming that the compound at issue era of extraterrestrial origin and did not come from materials of the own sounding.
Jamie Elsila, of the space center of Goddard flight in Greenbelt, Maryland, and main investigator of the works of confirmation, presented/displayed weekend the past the discoveries, accepted for its publication in the Meteoritics magazine and Planetary Science, during a meeting of the American Chemical Society in Washington.
We had already found meteorite amino acids, but this is the first time that are detected in a comet , the expert has explained. This finding pays the hypothesis that extraterrestrial objects as the meteorites and the comets could have planted the seeds of the Earth life do thousands of million years.
It leaves an answer