Bacteria Could Survive Journey To Mars, Suggests New Study

The Kibo portion of the ISS where the three-year experiment took place

The Kibo portion of the ISS where the three-year experiment took place

But for some scientists, the panspermia hypothesis still holds promise.

Imagine microscopic life-forms, such as bacteria, transported through space, and landing on another planet. The outer layers of started breaking down while the microbes in the center survived.

The theory also implies that bacteria would survive the trip on outer space because it would also be immune to space vacuum, space radiations, and even temperature fluctuations.

Some scientists are of the opinion that life might have not originated on this planet. Examples of deinococcus were left on the Intercontinental Room Station for three years before researches conducted the experiment.

The results entirely depended on the thickness of the bacteria. The study was led by Akihiko Yamagishi, a professor from Tokyo College and a team of scientists.

The researchers say some of the microbes which were brought back to Earth multiplied, confirming that the organisms survived in space. In light of the degree of rot appeared on the examples, particularly on a superficial level, analysts anticipate that a pellet a solitary millimeter thick could have made due as long as eight years in space. However, this is not the only idea that resulted from this experiment. And when an impact on the red planet ejected some of those rocks into space, one eventually wound up landing on Earth. Of course, this remains just a theory until proven right. As scientists are struggling to find a suitable way of arriving to our neighboring planet, it shouldn't be too hard for the Deinococcus bacteria if humans will consider it useful to send it there. They utilized scientific balloons and aircraft to develop their study.

The bacteria called Deinococcusradiodurans are some of the most radiation-resistant organisms ever. This was the starting point of outer space study.

These aggregates were analyzed after one, two and three years of exposure.

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The team's experimental design involved the samples being exposed to space for one-, two-, and three-year durations while resting on an exposure experiment module outside the International Space Station. According to Yamagishi's email, his team was able to create a survival curve. The experiment, performed from 2015 to 2018, was done atop Kibo, the Japanese Experimental Module on the ISS. At the end of the test, scientists discovered that clumps thicker than.5 millimeters survived the process, but only partially. However, this created the ideal ambiance for the dehydrated microbes beneath. DNA from 100 mm-thick pellets of D. radiodurans were vigorously harmed by UV. In other words, the rate of survival increases as the batch is thicker. For example, the ISS somewhere in the range of 15 and 45 years.

The new findings provide the best estimate yet of bacterial survival in space, though for a known extremophile.

The Deinococcus germs examined within the house station did not fare so well, exactly where oxygen and humidity proved unsafe to the bacteria, Yamagishi mentioned. Benner. "And maybe the Martian equivalent has food that's much different than what they're going to be having access to on Earth".

Yamagishi came out with a new expression for this hypothesis; he calls it massapanspermia.

Deinococcus microscopic organisms is found on Earth and has been nicknamed Conan the Bacterium by researchers for its capacity to endure cold, drying out and corrosive.

Although microbes could last that long, the probability of a journey to Mars is relatively small. Life as we know it requires water. However, other factors need to be taken into account.

However, the biggest challenge has been determining if bacteria could survive the harsh interplanetary - or even intragalactic - journey. What about the heated entry via the atmosphere of an alien planet? Although panspermia seems like a great strategy, at the moment, we don't have enough information to materialize for it actually to perform.

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