Warning: contains spoilers for Star Trek Omega! Star Trek just improved upon Deep Space Nine’s ending, giving fans what they have always wanted along the way. Star Trek: Deep Space Nine ended in 1999, ...

Depending on how you look at it, the universe might not have an "end," after all. This article was originally published at The Conversation. The publication contributed the article to Space.com's ...

Right above you is the sky – or as scientists would call it, the atmosphere. It extends about 20 miles (32 kilometers) above the Earth. Floating around the atmosphere is a mixture of molecules – tiny ...