Starship Asterisk*

Are the bluish areas around Mars ice or an atmosphere?

This comet has a very volatile surface and/or subsurface, resulting in large amounts of outgassing as it approaches the Sun. Most comets release their volatiles and dust much more slowly, and much more evenly over their surfaces, so the effects of their rotation aren't really visible. 12P appears t...

Hello, I'm a newbie to astronomy in general, so apologies if I ask any silly questions. I'm wondering about why this comet in particular has a spiral shape. The APOD description said that it was caused by rotation of the comet--- but wouldn't all comets be rotating as they fly through space? Why is ...