Follow the space program since the moon landing in the four-part documentary "Once Upon a Time in Space". Here’s how to watch ...

The rare Tim Allen movie that’s actually watchable, Galaxy Quest remains beloved by fans who don’t care that it’s basically ...

Astronomers have unveiled a new catalog of massive galaxy clusters, revealing new insight on the evolution of the universe ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. An example of a jellyfish galaxy with blue "tentacles" below it where stars are forming.