US stocks dropped sharply Monday — and chipmaker Nvidia lost nearly $600 billion in market value — after a surprise advancement from a Chinese artificial intelligence company, DeepSeek, threatened the ...

Sen's livestream of space offers the world’s first live Ultra High Definition views of Earth and is available for free on YouTube.

Scientists used changes in the supermassive black hole M87*'s accretion disk to infer its orientation, size and turbulence ...

While claims of a “rare alignment” are overblown, you can still see up to six planets in the night sky this weekend. Here's ...