However, new analysis of spacecraft observations in combination with novel laboratory techniques shows that Mars’s red colour is better matched by iron oxides containing water, known as ferrihydrite.

We’re not the first to consider ferrihydrite as the reason why Mars is red, but we can now better test this using observational data and novel laboratory methods to essentially make a Martian ...

A new study claims that a mineral found in Mars' dust called ferrihydrite, which forms in the presence of cool water, is ...