Star types explained by XKCD.com
XKCD.com is at it again.
Fly to and through the Orion Nebula.
From the European Southern Observatory.
Dr. Becky Smethurst previews the upcoming month’s most notable sky events and then brings us up to date on important developments in astrophysics.
10 Close Stars and What They are Like by John Michael Godier
Saturn in 2005 as seen by the Cassini probe:
The center of our galaxy, combining X-ray and radio emissions (you definitely want to explore the expanded, full-size image):