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Two windows of possible life appear on the moon

Penelitian - Life on the lunar surface in the past, even two early windows habitability for Earth satellites. Scientists at Washington State University and the University of London say in Astrobiology that the moon's surface conditions are sufficient to support a modest life shortly after the formation of a debris disk 4 billion years ago and during the peak of volcanic activity about 3.5 billion years ago.

During both these periods the moon spews large amounts of superheated volatile gases, including water vapor from the interior. Dirk Schulze-Makuch and Ian Crawford said the outgassing formed a puddle of liquid water on the surface and a fairly dense atmosphere to overflow the surface for millions of years.

Penelitian Two windows of possible life appear on the moon

"If significant water and atmosphere are present in the early Lunar for long periods of time, we think the surface of the moon is at least temporary," Schulze-Makuch said.

Schulze-Makuch and Crawford refer to recent space missions and sensitive analysis of rocks and soil samples showing moon not as dry as previously thought. In 2009 and 2010, an international team found hundreds of millions of water ice metrics. Another strong evidence of the large amount of water in the mantle in the Moon formation.

The early moon may also have been protected by magnetic fields that could have sheltered life forms on the surface of the deadly solar wind. Life on the Moon can come as it did on Earth, but a more likely scenario is carried by a meteorite.

The earliest evidence for life on Earth comes from cyanobacteria fossils aged between 3.5 and 3.8 billion years. During this time, the solar system is dominated by the impact of meteorites containing simple organisms such as cyanobacteria can be thrown off the Earth's surface and landed on the moon.

"It's very similar to the inhabitable moon at the moment. Actually the microbes thrive in a pool of water on the Moon surface before it dries and dies," says Schulze-Makuch.

Future space missions to obtain samples from sediments from periods of volcanic activity will provide answers to water content or other life markers. Experiments in the simulation of the moon's environment on Earth and on the International Space Station also see whether microorganisms can survive under the environmental conditions of the early moon.

Journal : Dirk Schulze-Makuch and Ian A. Crawford. Was There an Early Habitability Window for Earth's Moon? Astrobiology, 23 Jul 2018, DOI:10.1089/ast.2018.1844



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