A description at the layman level about the applications of spectroscopy in the investigation of the Solar System, with interactive diagrams

An online astrophysics catalog that helps the user toward some of the more frequently used ADC dataset holdings regarding galaxies.

Space science blog by Dr Ian O'Neill discussing astrophysics concepts in an informed yet informal way.

Devoted to recent developments, discoveries, and theories in astronomy and astrophysics.

A short introduction to astrophysics with associated articles on a number of topics.

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.

E-Print archive since April of 1992.

Introductory essays on astrophysics and astronomy.

Articles published on this site cover current research in astronomy and astrophysics, describe our current understanding of astronomical phenomena, and comment on issues related to astronomical research.

Beginner's guide to all the basic concepts of Astrophysics written by active scientists at Cambridge University, UK.

Nationally supported research centre. Find out about current research, upcoming seminars and job opportunities.

Hypothesis which attempts to explain the characteristics of QSOs (Quasi-Steller Objects), a.k.a. quasars, as optical illusions created by gravitational lensing and other phenomena.

Hypothesis by Charles Weber which attempts to explain the characteristics of quasi-stellar objects as optical illusions created by gravitational lensing and other phenomena.

A list of frequently asked questions with answers.

Physics knows four forces; 20th-century scientists were convinced that one of those, the electric force, played no macroscopic role in the Universe; site explains why that is incorrect.