Mars atmosphere’s composition tagged posts

This scene shows NASA’s Curiosity Mars rover at a location called “Windjana,” where the rover found rocks containing manganese-oxide minerals, which require abundant water and strongly oxidizing conditions to form. Credit: NASA/JPL-Caltech/MSSS

Chemicals found in Martian rocks by Curiosity Mars rover suggest Mars once had more oxygen in its atmosphere than it does now. Researchers found high levels of manganese oxides by using a laser-firing instrument on the rover. This hint of more oxygen in Mars’ early atmosphere adds to other Curiosity findings – such as evidence about ancient lakes – revealing how Earth-like our neighboring planet once was.

This research also adds important context to other clues about atmospheric oxygen in Mars’ past...