Life is 400 km from Earth: DNA of bacteria from Madagascar was discovered on the ISS upholstery
In samples taken from the outer surface of the International Space Station, scientists discovered the DNA of bacteria that inhabit Madagascar. They could be at an altitude of 400 kilometers, climbing with positively charged particles up the ionosphere.
© AP Photo / NASA-TV
The astronauts discovered the DNA of bacteria in one of the experiments that took place at the International Space Station in 2014. The astronauts took samples from the outer skin during a spacewalk. They found the DNA of bacteria that are usually present in the soil of Madagascar. TASS was informed about this by a representative of the head scientific institute of Roscosmos of TsNIImash Elena Shubralova at a scientific conference on research and experiments onboard the ISS.
According to Elena Shubralova, the bacteria could get to the station surface, climbing with positively charged particles up the ionosphere.
In 2013, DNA fragments of microbacteria found in Arctic waters were found on the ISS upholstery. Bacteria from Earth are able to colonize Mars : in one experiment, the spores of the bacterium Bacillus pumilus SAFR-032 were left in space for one and a half years in the EuTEF module, and some of them survived.
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The bacterial spores of Bacillus pumilus SAFR-032 showed a survival rate of 10-40% after 18 months in open space (in the shade), and in the simulation of Martian conditions, the survival rate was 85-100% (in the shade)
It used to be thought that the biosphere of the Earth extends to an altitude of 40 km, then 90 km made the border, and now we have determined that there is also life for 400 km. Elena Shubralova
© AP Photo / NASA-TV
The astronauts discovered the DNA of bacteria in one of the experiments that took place at the International Space Station in 2014. The astronauts took samples from the outer skin during a spacewalk. They found the DNA of bacteria that are usually present in the soil of Madagascar. TASS was informed about this by a representative of the head scientific institute of Roscosmos of TsNIImash Elena Shubralova at a scientific conference on research and experiments onboard the ISS.
According to Elena Shubralova, the bacteria could get to the station surface, climbing with positively charged particles up the ionosphere.
In 2013, DNA fragments of microbacteria found in Arctic waters were found on the ISS upholstery. Bacteria from Earth are able to colonize Mars : in one experiment, the spores of the bacterium Bacillus pumilus SAFR-032 were left in space for one and a half years in the EuTEF module, and some of them survived.
')
The bacterial spores of Bacillus pumilus SAFR-032 showed a survival rate of 10-40% after 18 months in open space (in the shade), and in the simulation of Martian conditions, the survival rate was 85-100% (in the shade)
Source: https://habr.com/ru/post/374901/
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