Hit the Create button, and YouTube will produce a set of video backgrounds for you to choose from. After you pick the ...

The viral clip was posted to X (Twitter) without comment—it quickly became clear none was needed, as the quote tweets did the ...

Professor O'Neill published a study with the American Institute of Aeronautics and Astronautics on the complex tradeoffs between increasing rocket launches and commercial air traffic.

Called Olbers’ paradox, the seemingly simple mystery of the sky’s darkness is something that stumped astronomers for ...

Pompeii with Vesuvius in the background. Credit ... Roman villas typically followed a layout of straight, clear lines, ...