Earth's most uninhabitable place found -
Earth's most uninhabitable place found
Posted 25 Nov 2019 04:36 PM

Source: ET

A place on Earth with no life?
Researchers have found an aquatic environment on the world with a complete absence of any forms of life, an advance that will result in an improved understanding of the limits of habitability. The study, revealed in the journal Nature Ecology and Evolution, disclosed that any form of microbial life was absent in the hot, saline, hyperacid ponds of the Dallol geothermal field in Ethiopia.

Place with most torrid environments on Earth!

The researchers, as well as those from the Spanish Foundation for Science and Technology (FECYT), said Dallol's landscape extends over a volcanic crater full of salt, constantly releasing poisonous gases with water boiling within the thick of the extreme hydrothermal activity. They said it's one of the foremost torrid environments on the world with daily temperatures in winter exceeding 45 degrees celsius. The landscape, the researchers said, had abundant hypersaline and hyperacid pools, with pH scale -- that is measured on a scale from 0 (very acidic) to 14 (very alkaline) -- even touch the negative mark.

Terrestrial analogue of early Mars'

Earlier studies had observed that sure microorganisms will develop during this multi-extreme atmosphere and researchers presented the place as an example of the limits of conditions which will support life. The researchers said the place was even planned as a terrestrial analogue of early Mars.

Extreme environment!

The researchers found a great diversity of a kind of primitive salt-loving microorganisms in the desert, and also the saline canyons around the hydrothermal site however not in the hyperacid and hypersaline pools, nor in the Black and Yellow lakes of Dallol that are wealthy in metallic element. "And all this despite the very fact that microorganism dispersion in this area, due to the wind and to human visitors, is intense," Lopez Garcia said.

Sterile place on Earth?

The researchers confirmed the findings with several other strategies as well as a large scale sequencing of genetic markers to detect and classify microorganisms, microorganism culture makes an attempt, using fluorescent probes to spot individual cells, chemical analysis of the hypersaline waters. They additionally used scanning electron microscopy and X-ray spectroscopy to probe into the water samples searching for signs of life. according to the researchers, the study helps in understanding the boundaries of habitability and presents evidence that there are places even on the layer that are sterile tho' they contain liquid water. They said the presence of liquid water on a planet -- that is usually used as a habitability criterion -- doesn't directly imply the presence of life.

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