Triple Conjunction Over Galician National Park
What are those bright objects hovering over the horizon? Planets — and the Moon. First out, the horizon […]
Astronomy
Sharpless 308: Star Bubble
Blown by fast winds from a hot, massive star, this cosmic bubble is huge. Cataloged as Sharpless 2-308 […]
Rings and Seasons of Saturn
On Saturn, the rings tell you the season. On Earth, today marks a solstice, the time when the […]
M64: The Black Eye Galaxy
This big, bright, beautiful spiral galaxy is Messier 64, often called the Black Eye Galaxy or the Sleeping […]
M45: The Pleiades Star Cluster
Have you ever seen the Pleiades star cluster? Even if you have, you probably have never seen it […]
APOD is 20 Years Old Today
Welcome to the vicennial year of the Astronomy Picture of the Day! Perhaps a source of web consistency […]
A Colorful Lunar Corona
What are those colorful rings around the Moon? A corona. Rings like this will sometimes appear when the […]
The Medusa Nebula
Braided, serpentine filaments of glowing gas suggest this nebula’s popular name, The Medusa Nebula. Also known as Abell […]
The Light, the Dark, and the Dusty
This colorful skyscape spans about three full moons (1.5 degrees) across nebula rich starfields along the plane of […]
Galaxy NGC 7714 After Collision
Is this galaxy jumping through a giant ring of stars? Probably not. Although the precise dynamics behind the […]