We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

The first full moon of summer is the Buck moon, reaching peak illumination in the afternoon. Here's when you'll want to look ...

Names are a strange thing in astronomy. Sometimes scientists come up with grandiose, simple name, like the Extremely Large Telescope. Other times, they come up with unique sounding names, like quasars ...

On Earth, water is so intertwined with life that our search for life on other worlds is essentially a search for water. When ...

In a new paper published in Physical Review X, researchers present compelling evidence for a “helicity barrier”—a previously ...

A Met Office video explains seven rare cloud types - including noctilucent clouds as they’re sighted in the UK.