Oxidized iron is responsible for the colour of rocks on Earth similar to those found on Mars. It is also what makes the blood red. The green tinge is also common in rocks on our planet.

This process supports a chemical reaction that transforms oxidized iron to its reduced form, creating a green hue in the rock ...

BROWNSVILLE, Texas — With a deafening roar that rattled windows, SpaceX — the rocket company founded by Elon Musk — fired up its new Mars rocket ... All systems green," Musk tweeted shortly ...

Similar mechanisms are now being considered for the findings on Mars. Due to safety constraints, Perseverance couldn’t get its SHERLOC and PIXL instruments close enough to the green spot for a ...