If not in visible stars and galaxies, the most likely hiding place for the matter is in the dark space between galaxies.

In an Oxford lab, graduate researcher David Nadlinger captured a now-iconic image of a single strontium ion suspended between ...

Since auroras concentrate around Earth’s magnetic poles, the best viewing locations for the Southern Lights are those at high ...

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to ...