The Astrophysical Journal  
   Devoted to recent developments, discoveries, and theories in astronomy and astrophysics.
   http://www.journals.uchicago.edu/ApJ/

Cause of the Characteristics of Quasars  
   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.
   http://www.geocities.com/isoptera.geo/index.html

The Electric Universe  
   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.
   http://www.electric-universe.de/

Network Generator  
   Generates astrophysical reaction rates online using an extended database.
   http://www-astro.ulb.ac.be/Netgen/form.html

NASA Astrophysics Data System  
   Search system for abstracts in astrophysics, planetary sciences and solar physics.
   http://adsabs.harvard.edu/

Astronomy and Astrophysics for all...  
   you can find every thing you want on this topic in this site...
   http://www.geocities.com/astrosci4u/

The Structure, Stability, and Dynamics of Self-Gravitating Systems  
   An interactive Astrophysics textbook from Louisiana State University.
   http://www.phys.lsu.edu/astro/H_Book.current/H_Book.shtml

Astrophysics and Astronomy  
   Introductory essays on astrophysics and astronomy.
   http://www.hpwt.de/Astroe.htm

Space Physics Textbook  
   A free online textbook on space physics.
   http://www.oulu.fi/~spaceweb/textbook/

Temporal Annex  
   Information mostly on the fourth dimension and theoretical physics.
   http://temporal_science.tripod.com/

On the Formation of Planetary Rings  
   Paper presented in 1996 by L. A. Molnar and D. E. Dunn.
   http://www-astro.physics.uiowa.edu/~lam/research/rings/

Physics 208 - Introduction to Astrophysics  
   Course offered via The Electronic University, an educational outreach server at the University of Oregon.
   http://zebu.uoregon.edu/~imamura/astro.208.html

University of Surrey - Department of Physics (Research)  
   University of Surrey abridged version of the book "Astrophysics" , with many links to relevant material on astronomy, astrophysics and cosmology.
   http://www.ph.surrey.ac.uk/astrophysics/index.html

Solar System - Celestial Mechanics  
   Presents ideas about the rotation of the sun and planets.
   http://www.surf2000.de/user/f-heeke/index.html

Astrophysics  
   E-Print archive since April of 1992.
   http://www.arxiv.org/archive/astro-ph

Nuclear Astrophysics Data  
   An area for providing nuclear data for astrophysics calculations, such as nucleosynthesis, stellar evolution, the Big Bang, and super-nova dynamics.
   http://t2.lanl.gov/data/astro/astro.html

Above the Skies, An Exploration into Our Universe Through Animated Spectroscopy  
   A description at the layman level about the applications of spectroscopy in the investigation of the Solar System, with interactive diagrams
   http://hea-www.harvard.edu/~efortin/thesis/html/index.shtml

Interdisciplinary Astrophysics Group  
   
   http://altamira.asu.cas.cz/

Dyson Sphere  
   A list of frequently asked questions with answers.
   http://www.nada.kth.se/~asa/dysonFAQ.html

You Be the Astrophysicist  
   Interactive site for learning about astronomy and astrophysics.
   http://imagine.gsfc.nasa.gov/YBA/yba-intro.html

Hyperspace  
   Site devoted to hyperspatial theories.
   http://artling.tripod.com

Smithsonian Astrophysical Observatory  
   A research institute of the Smithsonian Institution headquartered in Cambridge, MA, where it is joined with the Harvard College Observatory (HCO) to form the Harvard-Smithsonian Center for Astrophysics (CfA).
   http://cfa-www.harvard.edu/newtop/saohome.html

Living Reviews in Solar Physics  
   A peer-refereed, solely online journal publishing invited reviews covering all areas of solar and heliospheric physics research. Published by the Max Planck Institute for Aeronomy, Katlenburg-Lindau, Germany.
   http://solarphysics.livingreviews.org

Olber's Paradox Solved  
   A well know problem from astrophysics, Olber's paradox (Why is the night sky dark?), solved. As well as Newton's related Gravity paradox.
   http://home.wanadoo.nl/ronald.koster/olber.html

Red Shift by Photon Decay  
   Author explains how Hubble's red shift of starlight spectra results from photon decay, proportional to traveled distance.
   http://members.chello.nl/~n.benschop

Hands-On Astrophysics  
   Offers educational products that help students understand basic astronomy concepts.
   http://hoa.aavso.org

Canadian Institute for Theoretical Astrophysics  
   Nationally supported research centre. Find out about current research, upcoming seminars and job opportunities.
   http://www.cita.utoronto.ca

Fermilab Theoretical Astrophysics Group  
   Partially funded by a NASA Astrophysics Theory grant, find information about the group's past and future meetings.
   http://www-astro-theory.fnal.gov

Famous Astrophysicists  
   Profiles several prominent astrophysicists.
   http://www.famous-astrophysicists.com

WCRI WalkerScience  
   Examines several aspects of astrophysics including the big bang, origin of heavy elements and satellites, dark matter and dark energy.
   http://users.rcn.com/wcri/wcri

Modified Newtonian Dynamics  
   Overview of a controversial theory which is not generally accepted by the astrophysical community.
   http://members.rogers.com/mercy/

Physics Topics - Teaching Notes  
   Teaching notes on celestial mechanics, classical mechanics, and stellar atmospheres.
   http://orca.phys.uvic.ca/~tatum/

Grand Challenge Problems in Computational Astrophysics  
   Research session at the Institute for Pure and Applied Mathematics (IPAM), Los Angeles, CA, USA; 7 March - 10 June 2005.
   http://www.ipam.ucla.edu/programs/pca2005/

Astrophysical Data  
   A nice beginners collection of constants and other data, assorted in one page... Beginner level, with links to more advanced sites.
   http://www.astro.uni-bonn.de/~jbraun/w3_apd.html

The Titius-Bode Number Sequence Deciphered  
   An explanation of the Titius-Bode Law of planetary spacing.
   http://users.telenet.be/TaoWeb/TitiusBode.htm

Titius-Bode Law  
   Overview of the Titius-Bode Law.
   http://milan.milanovic.org/math/english/titius/titius.html

SIMBAD Astronomical Database  
   The SIMBAD astronomical database provides basic data, cross-identifications and bibliography for astronomical objects outside the solar system. SIMBAD can be queried by object name, coordinates, other criteria (filters), and lists of objects.
   http://simbad.u-strasbg.fr/Simbad

AMASE - Astrophysics Multi-spectral Archive Search Engine  
   An online astrophysics catalog developed using object-oriented database technology to help researchers locate multi-mission data in the NASA archives.
   http://adc.gsfc.nasa.gov/amase/

ADAF Theory  
   Accretion disk theory, mixing-length theory of convection, advection-dominated accretion flows.
   http://astrosun.tn.cornell.edu/us-rus/adaf.htm

The NASA Astrophysics Data System  
   The Astrophysics Data System (ADS) is a NASA-funded project which maintains four bibliographic databases containing more than 4.0 million records: Astronomy and Astrophysics, Instrumentation, Physics and Geophysics, and preprints in Astronomy.
   http://adswww.harvard.edu/

Contents  
   Accretion in astrophysics - active galactic nuclei, processes and dynamics.
   http://astron.berkeley.edu/~jrg/ay202/node1.html

Gravity is Cool, or, Why our Universe is Hospitable to Life  
   Text of the 1999 Oppenheimer lecture at UC Berkeley given by professor Freeman Dyson on the origin of life and other subjects.
   http://www.hartford-hwp.com/archives/20/035.html