When President-elect Trump served his first term, his most significant speeches were made abroad—in Saudi Arabia, Poland, and for the 75th Anniversary of D-Day in Normandy. In his second term ...

NASA’s troubled Mars Sample Return program is stuck at a crossroads—and is likely to remain in limbo until at least 2026—agency officials said at a press briefing on Tuesday. To bring this ...

The question now is: will they? And if the Trump administration moves forward with Mars Sample Return (MSR), what will it look like? Could it involve a human mission to Mars instead of a series of ...