Two ayatollahs in Iran have called for U.S. President Donald Trump to be killed. The key question is not how seriously this ...

They are also, in a way the Pentagon likely never intended, a disconcerting form of art: surreal balls of fire and ash set ...

People who grew up during the Cold War, as I did, internalized this fear as children. We still tell our campfire tales about ...

"This discovery heralds a broader understanding of the diversity in massive stars' deaths and a need for deeper investigations into the whole landscape of stellar evolution." ...

The SPA, the largest and oldest impact structure on the Moon, was formed approximately 4.25 billion years ago by a massive impact. This event is thought to have released energy equivalent to that of a ...