Donald Trump isn’t the first president to order military strikes without congressional approval. But his decision to bomb Iran comes at a uniquely volatile moment — both at home and abroad. Overseas, ...

President Donald Trump's threat to cancel Elon Musk's government contracts would have far-reaching implications, experts said.

With Trump threatening to sever government ties with Musk's businesses, most notably SpaceX, Newsweek looked at the web of contracts that bind the billionaire's ventures to the U.S. government ...

"Returning the scientifically selected samples that await us on Mars, as part of a balanced portfolio, will help to ensure ...

NASA’s Mars Orbiter is rolling 120° to help see beneath the surface - and it’s revealing clearer signs of ice, rock, and ...

Curiosity finds strange boxwork ridges on Mars that hint at ancient underground water. Scientists are now drilling for ...

Brookings Institution’s foreign policy research director Michael O’Hanlon believes the United States and China face a “moment of truth” in their economic relationship as trade tensions ...

Donald Trump isn't the first president to order military strikes without congressional approval. But his decision to bomb ...

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above clouds before dawn. It’s twice as tall as Earth’s largest volcano.