This is because these objects formed “billions of years ago when liquid water still existed on the Red Planet. Water carried ...

The Martian forecast will almost always include a red sky but a recent panorama captured by NASA’s rover Perseverance shows what a blue sky would look like on the Red Planet.

To be sure, Mars likely hosted some kind of water on the surface between 3.7 billion and 4.1 billion years ago, when Earth and the rest of the solar system were still young.