NASA’s Perseverance rover is studying rocks that show several eras in the history of a river delta billions of years old. Watch: A$AP Rocky leaps over court barrier ...

NASA’s Perseverance rover has uncovered something never seen before on Mars, a find that could offer ... a site that was once home to a massive river delta and may have held liquid water ...

Mars may have once hosted an ocean with waves ... Sedimentary rocks, carved channels and even the remains of an ancient river delta, studied by NASA’s Perseverance rover, have shown how water ...