Skywise Unlimited

The Hertzsprung Russell Diagram is the “Rosetta Stone” of stellar astronomy and it’s simple, very simple. So to put it simply, it’s just a graph that plots lots of stars’ luminosities against their surface temperatures. As simple as that sounds, it is the key to understanding stellar evolution. In case you thought “Rosetta Stone” is […]

A black hole is a region of space where the force of gravity is so intense that it is best pictured as having curvy criss-crossing lines on it. Nothing can escape, not even snarky comments. If you’ve ever thrown a baseball into the air, you probably noticed it quickly returned to the Earth. The harder […]