magnitude
How Low Can You Go? Take the Great Square Challenge
Cast your gaze up, up, up on the next dark, moonless night and stare into the Great Square of Pegasus.…
10 years ago
How Far Can You See in the Universe?
When you look into the night sky, you’re seeing tremendous distances away, even with your bare eyeball. But what’s the…
11 years ago
Geek Out! How to Build Your Own Nova Delphini Light Curve
And now for something to appeal to your inner geek. Or, if you're like me, your outer geek. Many of…
11 years ago