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

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

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

Cambridge Relativity

Beginner's guide to all the basic concepts of Astrophysics written by active scientists at Cambridge University, UK.
http://www.damtp.cam.ac.uk/user/gr/public/

Encyclopedia of Astronomy and Astrophysics

Comprehensive archive of explantory articles on all key Astrophysics topics, categorised and fully searchable; actively updated by the Institute of Physics.
http://eaa.iop.org/

THIS-Tuneable Heterodyne Infrared Spectrometer

THIS - instrument pages for the Tuneable Heterodyne Infrared Spectrometer developed by the University of Cologne. THIS is a transportable receiver designed for atmospheric and astrophysical observations in the mid infrared spectral region (7-28 µm).
http://www.ph1.uni-koeln.de/workgroups/astro_instrumentation/this/

The Astrophysics Spectator

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.
http://www.AstrophysicsSpectator.com/

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.the-electric-universe.info/

Modified Newtonian Dynamics

Overview of a controversial theory which is not generally accepted by the astrophysical community.
http://ca.geocities.com/mercy@rogers.com/