Rocket launches can create eerie patterns in the sky, from undulating bright-blue spirals to glowing “jellyfish” blobs.

A team of physicists has made groundbreaking observations in a semiconductor-based time crystal by periodically driving it ...

The longer you look at the photo, the harder it gets, because there are few other visual clues other than the steps ...

Scholars believe that stairs are more than 6,000 years old, predating Christ; their exact age cannot be determined. (21 ...