SpaceX launched Northrop Grumman's revolutionary Cygnus XL. | Cosmoknowledge

A Tour of Cygnus X-1 | NASA's Chandra X-ray Observatory FriendsofNASA.org: Over three decades ago, Stephen Hawking placed, and eventually lost, a bet against the existence of a black hole in Cygnus X-1. Cygnus X-1 is a black hole about 15 times the mass of the Sun in orbit with a massive blue companion star. Astronomers used several telescopes, including NASA's Chandra X-ray Observatory, to study Cygnus X-1. The combined data have revealed the spin, mass, and distance of this black hole more pre

Ever wonder what happens in the aftermath of a supernova? In this video, you’re watching the glowing remnants of a stellar explosion 17,000 light-years from Earth disperse over a period of 25 years, making this Chandra X-ray Observatory’s longest-spanning video ever released. https://go.nasa.gov/3NaO7bO | NASA - National Aeronautics and Space Administration