Martian Caves As Potential Protection For Living On Mars

There’s hope for humans surviving on Mars! A workaround was found by experts. In theory, the areas near Martian caves should be shielded from some of the radiation that penetrates the planet’s surface. Unlike our planet, Mars’ surface doesn’t have a thick atmosphere that prevents UV radiation and ionizing radiation from space from reaching the surface. The Martian caves could serve as a potential shield from the harmful waves: 

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However, images of the planet from orbit have shown what appear to be entrances to caves, andthe insides of these caverns could be protected from those harmful rays.Daniel Viúdez-Moreiras at Spain’s National Institute for Aerospace Technology has now calculated how much UV radiation would still make it into different types of caves at various locations on Mars.

He found that in many cases the levels of UV radiation inside the caves would be around 2 per cent of the levels on the surface. Those radiation levels are low enough to be relatively safe, but still high enough to sustain organisms that require light to produce energy via photosynthesis.

It isn’t clear whether ionising radiation – which is potentially even more dangerous than UV – would be blocked out in the same way, but it is likely, according to Viúdez-Moreiras. “Ionising radiation doesn’t present exactly the same behaviour as UV radiation,” he says. “However, it is expected that ionising radiation will also be strongly attenuated in pit craters and cave skylights.”

The consequences of this are twofold: caves may be safe locations for human explorers to hide from the extreme conditions at the Martian surface, and they may also be some of the best places to search for signs oflife on the Red Planet. No lander or rover has ever visited a cave on Mars, but doing so would be the best way to figure out whether they really are habitable, says Viúdez-Moreiras.

Image credit: NASA/JPL/UArizona

Source: neatorama

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