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 ...

The September 2025 issue featured "A guide to beginner's guides," a reminiscence and description of some the books for astronomy beginners that Contributing Editor Raymond Shubinski recommends or ...

It wasn’t all that many years ago that you could go to a major astronomy meeting and hear the latest news about galaxies and supernovas and quasars and the Big Bang — but nothing at all about planets ...