Like true beauty, suitability for life may come from within.

They have a “third eye”, can walk on water, and swim like a pro.

When dealing with a murderous newcomer, evolution rewards a little deception on behalf of your child.

There’s video, but you might not want to look at it.

Cygnus X-1 remains one of the best-studied black holes. Our knowledge of it just got even better.

This world first is providing valuable insight into the deaths of massive stars.