An autographed space shuttle model and a U.S. flag flown on the first and last shuttle missions will remain on the International Space Station (ISS) to serve as a monument to the end of NASA's shuttle ...

Cat's Eye Nebula is located in the constellation Draco. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A brand new 3D model showcases the ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights. Aaron McGowan, Principal Lecturer in Physics and ...