First, there was the "square structure", then there were the Phobos and Mars "monoliths". Now, some are once again talking about so-called "doorways" on Mars – however, the image they cite is ...

But importantly, this study notes that Mars' redness happened before the water left. So how did a wet planet become so red? It all comes down to ferrihydrite, a poorly crystalline mineral ...

Oxygen is one of the key things holding us back from putting a person on Mars. If NASA can solve that problem and make it so we can breathe on Mars, putting boots on the ground will become a lot ...

David Bowie famously pondered whether there is life on Mars – and we might be one step closer to answering that question. Enough water to cover the surface of Mars has been discovered within the ...