When you look up at the sky and see the sun beaming down at you, it’s hard to tell how truly big it is. So consider this: 1.3 million duplicates of Earth could comfortably fit inside of it, according ...

A highly experienced former NASA astronaut will command the first all-European private astronaut mission to the International Space Station, which is scheduled for liftoff during Wednesday rush hour.

Black holes. Despite their names, the enigmatic objects are opposite of vacuous. They are some of the universe’s densest objects, with masses ranging from the size of stars to several hundred million ...

"We are just beginning to appreciate how bad the disruption can be for land-based and space-based telescopes, and as more and more satellite overflights occur, the problems will only intensify." When ...

Explore where and when you can see the midnight sun around the world. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The midnight sun is a ...