Ultraviolet image of the globular cluster NGC 1851 in the southern constellation Columba.
The Blue Ring Nebula
Geometry of the Blue Ring Nebula (Animation)
Flaring Red Dwarf Star (Illustration)
Pulsar Candidate in Andromeda
Frankenstein Galaxy
Andromeda in High-Energy X-rays
After the Explosion: Investigating Supernova Sites
Galaxies Grow from Inside Out
Big Brother to the Milky Way
Galaxy's Pencil-Thin Profile