Astrophysics

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

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

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

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

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

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/

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/

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

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

Dyson Sphere
A list of frequently asked questions with answers.
http://www.nada.kth.se/~asa/dysonFAQ.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.the-electric-universe.info/

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/

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

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

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/

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

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

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

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

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

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

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/

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

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

Olber's Paradox
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://www.ronaldkoster.net/olber.html

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

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

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

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

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

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

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

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

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

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

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

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

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