NASA's Perseverance Mars rover saw two dust devils swirl across the surface of the Red Planet before joining together as one.

Add Yahoo as a preferred source to see more of our stories on Google. Perhaps you have seen videos or pictures of rocks very carefully stacked as an artistic work. They may even look impossibly ...

Add Yahoo as a preferred source to see more of our stories on Google. NASA's Mars Perseverance rover has stumbled across an unusual sight: a stack of rocks on the Martian surface. How did they end up ...

Mars dust devils 'eat' one another as Perseverance rover watches NASA's Perseverance Mars rover saw two dust devils swirl across the surface of the Red Planet before joining together as one.

Perhaps you have seen videos or pictures of rocks very carefully stacked as an artistic work. They may even look impossibly balanced. Or you may have seen so-called balancing rocks, with one huge ...