A collection of rocks scattered on an ancient shoreline on Mars might indicate that the Red Planet was once far more Earth-like than scientists previously thought. The rocks, discovered by NASA's ...
Mars may face more than twice as many close encounters with potentially dangerous asteroids as Earth does, according to a new study. This could imperil exploratory missions to the Red Planet, but ...
Potentially hazardous asteroids pose a risk to Mars missions, but they can also yield insight into the history of the Red Planet and the early solar system, new research suggests. Mars may face ...