Thursday , November 26 2020

Can microbes spread from planet to planet? It seems like yes



Great results from Japanese space missions.

The one-time trial at the International Space Station (ISS) with exposure to microbes and organic substances to cosmic factors that are biologically unfaithful has significantly supported two main hypotheses about the origin of life on our planet.

First, the hypothesis about the transfer of inter-planetary microbes in meteorites (panspermia). And second, the hypothesis that organic functioning as the foundation of life has been brought to Earth in its interior is protected from extreme micrometeorites and meteorites of the cosmos.

In this context, even comets and planets are considered. According to some previous studies, most of the organics they carry can "survive" extreme pressures and temperatures in the impact of disasters from such bodies on the surface of the Earth.

Cosmic dandelions

This experiment was prepared by Japanese scientists from the National Aerosocial Research Agency and several other national universities and research institutions. The eight-member team led Akihiko Jamaguish of the University of Pharmacy and Biological Sciences in Tokyo.

The project is called Tanpopo, a Japanese dandelion plant, also a famous flower in our country, where the seeds spread even relatively long winds. As an analogy to the idea of ​​panspermia.

A special panel is placed for one year on the outer wall of the Japanese Kibo module, which is part of the ISS. These are bacteria from the strains of Deinococcus aetherius ST0316 and, on the other hand, a set of organic substances, build up known blocks of life.

During that time period, there is deep vacuum, temperature fluctuations, and sunlight and galaxy radiation.

In the context of the panspermia hypothesis, organics found in many meteorites play an important role. However, they can also appear non-biologically.

photogallery / 3

In the context of the panspermia hypothesis, organics found in many meteorites play an important role. However, they can also appear non-biologically.

Source: NASA / GSFC, Chris Smith

On Musk Waves

Applied equipment was sent to SpaceS in April 2015 on the ISS. In May 2015, their astronauts placed a bell on the Kibo module. In June 2016, they were dismantled and returned to the station. They then went to a special capsule on Earth. The analysis began in October 2016.

The first round concerns the quantification of external influences. It has been found that both temperature and radiation levels have been in full consistency with bacterial survival and good conservation of organic molecules. However, the thickness of the bacterial cell layer must be at least 500 micrometers, with dead cells closer to the surface protecting living cells under radiation.

Panspermia is also being discussed in connection with the transfer of possible Martian life to Earth (and our Mars) in meteorites. Support is the presence of organic substances in meteorites from Mars and Marshes. But they can also be created non-biologically.

photogallery / 3

Panspermia is also being discussed in connection with the transfer of possible Martian life to Earth (and our Mars) in meteorites. Support is the presence of organic substances in meteorites from Mars and Marshes. But they can also be created non-biologically.

Source: Michael Helfenbein

Revive old ideas

The first signs of what we now call the panspermia hypothesis can be found in ancient writers. The new version was mainly associated with the name of Swedish physicist and chemist Svantea Arrhenius (1859-1927), Nobel Prize winner for chemistry for 1903.

He presented it in 1908 in the book Worlds in the Making: "Evolution of the Universe". Recently, British astrophysicist Fred Hoyle and Chandra Wickramasinghe were quite a part of it. This is still a hypothesis, but more and more scientists are starting to take it seriously, at least as a realistic choice, in one context or another.

This study was published by the Astrobiology scientific journal. Magazine publishers have also received news.


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