Tag Archives: space

Martian Life a Possibility

Last September, NASA scientists, using image spectroscopy on the Mars Reconnaissance Orbiter, had published new evidence in support of the hypothesis that present day water flows on the surface of Mars. It is often said that where there is water, there is usually life; but what kind of life can exist in such an extreme environment?

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A recently published study by a group of European Researchers has shown that certain fungi and lichens on Earth have the ability to survive in conditions similar to Mars for an extended period of time. The study is ongoing and will involve several more Fungi and Lichen species as part of the Lichens and Fungi Experiment (LIFE).

"Lichen" by Brittany. From Flickr. Licensed under CC 2.0.

“Lichen” by Brittany. From Flickr. Licensed under CC 2.0.

The two types of fungi collected come from the cryptoendolithic family: the Cryomyces antarcticus and Cryomyces minteri. The organisms were taken from within cracks of rocks found in the McMurdo Dry Valleys in Antarctica. Strong winds, cold temperatures and no precipitation characterize this region. The samples were placed in cells and attached to the ISS via the EXPOSE-E platform.

EXPOSE-E Platform Installation. From Astronomy Magazine.

EXPOSE-E Platform Installation. From Astronomy Magazine.

For a year and a half, half the fungi were subject to Mars-like conditions while the others were exposed to regular conditions in space. The results show that not only did 60% of cells remain unharmed but many were able to resume and even increase cellular activity.

If these lifeforms can survive on the surface of Mars, it may be possible that Martian life already exists. The challenge now for NASA, the European Space Agency and other scientists is to send humans to Mars without contaminating the region.

Do you think that within the century we will discover the first examples of extraterrestrial life?

-Johnny Lazazzera