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

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.

Mars’s signature red hue may not be due to hematite, as previously believed, but rather to ferrihydrite — an iron oxide that requires water to form. Using a combination of spacecraft data and ...

Perseverance is pushing the limits of Martian science by using its SHERLOC instrument to detect organic compounds, but harsh ...

Right now, Mars is a reddish desert landscape – attractive but dead, and certainly not home to any little green men. Other nearby planets offer even less hope. Mercury is a scorched rock too ...

We have long been inspired by the idea that life could reside on Mars – human or otherwise. But fiction is getting closer to reality, says NASA’s former chief scientist, Jim Green.