Researchers utilizing NASA s Curiosity rover s ChemCam instrument unveiled elevated manganese levels in lakebed rocks within Mars Gale Crater, suggesting a potential Earth-like environment
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Nightglow, also known as airglow, is essentially an emission of light by a planet’s atmosphere. In Mars’ case, this emission occurs “due to the recombination of oxygen atoms created in the summer atmosphere and transported by winds to high winter latitudes, at altitudes of 40 to 60 km.”
The present day habitability of Mars is an area of research that has exploded hugely in the last decade, to the extent that it s often hard to keep track of everything that s going on. This is by way of background material for my other articles on habitability of Mars.