Mars was once a wet world. The geological record of the Red Planet shows evidence for water flowing on the surface—from river deltas to valleys carved by massive flash floods. But a new study shows ...

NASA says its history-making Mars helicopter Ingenuity has flown for the last time: The space agency says its rotor blades were damaged as the craft was landing, and it won't fly again. Thursday ...

Add Yahoo as a preferred source to see more of our stories on Google. FILE - In this image made available by NASA, the Mars Ingenuity helicopter hovers above the surface of the planet during its ...