Sun

How Stuff Works: Sun - In-depth illustrated description of the Sun, its surface, atmosphere, sunspots, solar prominences and solar flares.
http://www.howstuffworks.com/sun.htm

Stanford Solar Center - Presents a collection of educational activities based on Solar Oscillations Investigation (SOI) and Solar and Heliospheric Observatory (SOHO) data.
http://solar-center.stanford.edu/

NASA/Marshall Solar Physics - The Solar Physics Branch of Marshall Space Flight Center's (MSFC) Space Sciences Laboratory (SSL) is composed of 15 scientists involved in various studies of the physics of the Sun.
http://science.nasa.gov/ssl/PAD/SOLAR/default.htm

YPOP Tour of the Sun - Educational information about the Sun.
http://www.lmsal.com/YPOP/Spotlight/Tour/index.html

Windows to the Univers: Sun - Overview including general information, data, pictures, news, historical and mythological background.
http://www.windows.ucar.edu/cgi-bin/tour.cgi?link=/sun/sun.html

The Virtual Sun - Virtual tour of the sun which uses images, diagrams, and movies to illustrate subjects such as solar wind, solar flares, the solar surface and sunspots.
http://www.michielb.nl/sun/kaft.htm

Cosmic and Heliospheric Learning Center - Based at NASA/GSFC. Includes sections about the Sun, the cosmic rays and the history of its study.
http://helios.gsfc.nasa.gov/

Solar Images from SDAC - Daily pictures from the SOHO and Yohkoh space platforms, the US National Solar Observatory, and the Mauna Loa Solar Observatory.
http://umbra.nascom.nasa.gov/images/latest.html

Global Oscillation Network Group - Features project overview and news of a group attempting to measure the oscillations of the Sun's interior.
http://helios.tuc.noao.edu/

Sun Position Calculator - Calculates Sun azimuth and altitude for a given location and date.
http://www.geocities.com/senol_gulgonul/sun/

Helio- and Asteroseismology - Offers introduction to the science of solar oscillations.
http://bigcat.phys.au.dk/helio_outreach/english/engHA0.html

Analemma - Explains the phenomenon - the Sun's apparent path in the sky - including simple animations.
http://www.analemma.com/

Current Solar Data - An unofficial archive of NOAA GOES solar data.
http://www.maj.com

Current Solar Data - Offers real time images and observations of the Sun from a variety of ground and space sources.
http://www.n3kl.org/sun/

AAS Solar Physics Division - [Greenbelt, Md] Members, organization, news, meetings, contacts.
http://umbra.nascom.nasa.gov/aas_spd/

Birmingham Solar Oscillations Network - Who they are and what they do. Also includes background information, results, data.
http://bison.ph.bham.ac.uk/

The Michelson Doppler Imager - Provides results and science of an experiment flown on the SOHO spacecraft to study solar oscillations.
http://soi.stanford.edu/

The Analemma Project - An analemma photograph is featured with a detailed description of how it was created.
http://www.steveirvine.com/analemma.html

Global Oscillation Network Group (GONG) - Extensive information about the group and the project, which aims to conduct a detailed study of solar internal structure and dynamics using helioseismology.
http://gong.nso.edu/info/

The Inconstant Sun - From NASA Science News, experiment on board shuttle mission STS-107 is monitoring the Sun's variable brightness and its link to terrestrial climate change.
http://science.nasa.gov/headlines/y2003/17jan_solcon.htm?list93257

The Nine Planets: Sun - General information, some statistical data and links.
http://www.nineplanets.org/sol.html

Views of the Solar System: Sun - Pictures, animations, general information and data.
http://www.solarviews.com/eng/sun.htm

Geospace Environment Modeling (GEM) - Offers documents and overview from a series of projects with focus on magnetosphere studies.
http://www-ssc.igpp.ucla.edu/gem/Welcome.html

The Virtual Sun - A virtual tour with basic information. Some movies also available.
http://www.astro.uva.nl/demo/sun/