• 9th Annual International Astrophysics Conference - To be held March 14 - 19, 2010 at the Center for Space Plasma and Aeronomic Research (CSPAR) at The University of Alabama.
• AstroEngine - Space science blog by Dr Ian O'Neill discussing astrophysics concepts in an informed yet informal way.
• Astrophysics - E-Print archive since April of 1992.
• Astrophysics - A short introduction to astrophysics with associated articles on a number of topics.
• Astrophysics - Wikipedia article on this branch of astronomy that deals with the physics of the universe, including the physical properties of celestial objects and the interstellar medium, as well as their interactions.
• Astrophysics and Astronomy - Introductory essays on astrophysics and astronomy.
• Cambridge Relativity - Beginner's guide to all the basic concepts of Astrophysics written by active scientists at Cambridge University, UK.
• Canadian Institute for Theoretical Astrophysics - Nationally supported research centre. Find out about current research, upcoming seminars and job opportunities.
• Cause of the Spectral Characteristics of Quasars - Hypothesis which attempts to explain the characteristics of quasi-stellar objects as optical illusions created by gravitational lensing and other phenomena.
• Dyson Sphere - A list of frequently asked questions with answers.
• Encyclopedia of Astronomy and Astrophysics - Comprehensive archive of explanatory articles on all key Astrophysics topics, categorised and fully searchable; actively updated by the Institute of Physics.
• Encyclopedia of Astrophysics - A free peer-reviewed online publication written by scholars from around the world.