Astronomy & Astrophysics 101: Planetary Nebula

A 3-D model of the Cat’s Eye nebula shows rings sculpted by jets

Galileo confirmed as author of pseudonymous 17th century astronomy text | It's a biting rebuttal to a philosopher's ideas about the 1604 supernova ("stella nova").

The Veil Nebula - A 6 Panel Mosaic [OC]