I know that some links are displayed more than once, because they belong to more than one category listed here. So you don't need to search the complete link list to find a certain internet ressource.

• The Sun on the WWW
  Today's Sun
  Sun - General Links
  
• Major Solar Physics Sites; Observatories, Research Groups
  Space Weather - Resources and Information
  Satellites
  Solar Observatories and Research Groups
• Journals, Literature Services
• Databases, Astronomical Catalogs and Star Maps
• Astronomical and Space Organizations
• NASA and associated Organizations
• IDL, Software - Sites
• Meta Astronomy Sites

The Sun on the WWW

TODAY'S SUN; Current Space-Weather Conditions

• Today's Space Weather, by NOAA/SEC
  GOES X-ray flux, H-alpha full Sun image
• Space Weather Today
• Today's Space Weather
• NOAA Space Weather
• Solar Soft Latest
• NOAA Space Environment Center
• IPS: Ionospheric Prediction Service
• Majestic - Current Solar Data
• ESA - Space Weather
• UCAR
• Current Solar Images, by NASA/GSFC/SDAC
  SOHO EIT, Yohkoh SXT, NSO/KP Magnetogram & HeI 10830
  NSO/SP CaII K, HAO/MLSO white-light
• SOHO Latest Images
• Yohkoh Soft X-ray Telescope, by ISAS
• Latest Images, by Big Bear Solar Observatory
  H-alpha, White light, & Ca K-line full disk images
• Images by HAO/MLSO
  H-alpha disk & limb, White light corona, He I
• Images by Mt. Wilson Observatory
  Magnetogram, Dopplergram, Photospheric lines, Sunspot drawing
• Images by Mees Observatory/IfA/U. Hawaii
  Active Region Maps
  Ca +K line image
  Vector Magnetogram / Haleakala Stokes Polarimeter
  Vector Magnetogram / Imaging Vector Magetograph

SUN - General Links

• ACE Solar Wind Data
• Daily Total Solar Irradiance
• Estacion de Observacion Solar - Universidad de Sonora
• GONG Project - Global Oscillation Network Group
• Hiraiso Solar Terrestrial Research Center
• INTER-SOL Programme (ISP)
  Daily Sunspot Activity
• Marshall Space Flight Center - Solar Physics
• National Solar Observatory/Sacramento Peak - Public Relations
• SOHO Solar Wind Data
• Solar and Heliospheric Observatory - SOHO
• Solar and Stellar X-Ray Group - Harvard-Smithsonian Center for Astrophysics
• Solar Data Analysis Center
  at NASA Goddard Space Flight Center (Latest Solar Images)
• Caltech Solar Radio Burst Locator
• Solar Images from La Palma
• Space Environment Center
• Sunrise and Sunset
• Sunspot Numbers
• The Australian Space Weather Agency ( IPS )
• The 150-Foot Solar Tower at Mt. Wilson Observatory
• The Sun: a Pictorial Introduction
• Upper Atmosphere Research Satellite - UARS

Major Solar Physic Sites

Space Weather - Resources and Information

• Space Weather Information Server ( esa )
  Links to space weather servers
• Space Weather at Rice University
• Space Weather Report list at University of Maryland
• SpaceWeather.com
• Space Weather Resources

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• GSFC Solar Flare Theory
• GSFC outreach
• Int. Clearinghouse - many links !
• International Solar Terrestrial Physics
• National Academy of Science
• NGDC: National Geophysical Data Center FTP pages
• NRL - Naval Research Laboratory : Space Weather
• Solar Terrestrial Activity Report

• ---

• Space Weather - University of Calgary
• On-Line Glossary of Solar-Terrestrial Terms
• Oulu Space Physics Textbook
• Primer on the Solar Space Environment
• The Exploration of the Earth's Manetosphere

• ---

• The Aurora Page
• The Geophysical Institute Auroral Activity Forecast
• Jan Curtis' Images of the Aurora

Satellites

• ACE - Advanced Composition Explorer
• BATSE - Solar Flare Server
  - BATSE Flare Database (Login as BATSE)
• CORONAS - F
• GOES SXI - Solar X-ray Imager
• RHESSI (Berkley ) - High Energy Solar Spectroscopic Imager
  HESSI (GSFC)
• MTI HXRS, FTP dir - Solar Broad-Band Hard X -Ray Spectrometer
• RESIK
• RESIK Weekly
• Russian Space
• SOHO (ESA/NASA)
  CDS
  CELIAS
  COSTEP (in German)
  EIT
  ERNE
  GOLF
  LASCO
  MDI/SOI
  SERTS
  SUMER
  SWAN
  UVCS
  VIRGO
  synoptic data
• TRACE (LMSAL) - Transition Region And Coronal Explorer
• Solar-B (ISAS/PPARC/NASA)
• The SDO Mission - Solar Dynamics Observatory
• The STEREO Mission - Solar TErrestrial RElations Observatory
• UARS - Upper Atmosphere Research Satellite
• Ulysses (NASA/JPL)
• VAULT - Very high Angular resolution ULtraviolet Telescope
• WIND: WAVES
• Yohkoh (ISAS) - Japan
  Yohkoh SXT (LMSAL) - U.S.A.
  SXT weekly observing plan (First_Light)
  Yohkoh Public Outreach Project (YPOP)
  Yohkoh Team Bulletin Board (Lockheed)
  Yohkoh Team Bulletin Board (MSSL)
  Yohkoh Data Archive Centre (YDAC)
• NSSDC Spacecraft Query Form - search engine for spacecraft information

Solar Observatories and Research Groups

• Listing of Solar Observatories (many thanks to Dr. Kevin Reardon)
• AIP, Astrophysikalisches Institut Potsdam - Germany
• Big Bear Solar Observatory - U.S.A.
• Caltech Solar Observatory - U.S.A.
• Catania Astrophysical Observatory - Italia
• Culgoora Solar Observatory - Australia
• Crimea Astrophysical Observatory, Ukraine --- Mirror at Stanford (US)
• Daily Solar Images - U.S.A.
• DASOP/LPSH, Meudon Observatory, Paris - France
• EGSO project - European Grid of Solar Observations
• ESA --- Solar System Division - Europe
• GONG - Global Oscillation Network Group
• Helio- and Asteroseismology: (Denmark) and Stanford Mirror
• High Altitude Observatory - (Mauna Loa Solar Observatory ) - U.S.A.
• Hiraiso Solar Terrestrial Research Center - Japan
• Instituto de Astrofisica de Canarias - Gran Canaria, Spain
• Kiepenheuer-Institut für Sonnenphysik - Germany
• Kyoto Univ., Dept. of Astronomy - Japan
• Learmonth Solar Observatory - Australia
• Lockheed Martin - Solar and Astrophysics Laboratory - U.S.A.
• Max-Plank-Institute for Solar and Heliospheric Research - Germany
• Mees Solar Observatory (MSO Today) - Hawaii, U.S.A.
• Mount Wilson Observatory - U.S.A.
• Montana State University --- (Max Millenium Program ) - U.S.A.
• NAO of China --- Huairou Solar Observing Station - China
• NAO of Japan --- Solar Physics Division - Japan
• NASA/Marshall Solar Physics.
• National Optical Astronomy Observatories - U.S.A.
• National Solar Observatory of America - U.S.A.
• National Solar Observatory (Kitt Peak)->U.S.A.
• National Solar Observatory (Sacramento Peak) - U.S.A.
• NOAA Solar Terrestrial Physics (STP) - U.S.A.
  - Glossary of Solar-Terrestrial Terms
• NOAO Helioseismology Overview - U.S.A.
• NSSDC Coordinated Heliospheric Pages (COHOWeb) - U.S.A.
• Nobeyama Solar Radio Observatory - Japan
• Prairie View Solar Observatory - U.S.A.
• SDAC - Solar Data Analysis Center Web Page
• San Fernando Solar Observatory - U.S.A.
• SOI Helioseismology Overview
• Solar and Heliospheric Observatory - U.S.A.
• Solar Activity Chart
• Solar Maximum Mission (SMM)
• Solar News - U.S.A.
• Solar Physics, ETH, Zurich - Switzerland
• Solar Physics at Stanford University - U.S.A.
• Solar Physics at Harvard-Smithsonian Center for Astrophysics
• Solar-Terrestrial Physics, NGDC, NOAA
• Sonnenobservatorium Kanzelhöhex - Austria
• SPARTAN 201 - U.S.A.
• Stanford Solar Center - U.S.A.
• Sudbury Neutrino Observatory (SNO) - U.S.A.
• Sunspot Numbers
• SVST, Swedish Vacuum Solar Telescope, La Palma
• The AAS Solar Physics Division - U.S.A.
  - Solar News
• The Aurora Page - U.S.A.
• THEMIS Solar Telescope - France
• Universitäts-Sternwarte Göttingen - Germany
• VAULT - Very high Angular resolution ULtraviolet Telescope
• Wilcox Solar Observatory - U.S.A.

Journals, Literature Services

• Harvard.edu - Abstract service of the Astrophysics Data System
• Unc.edu - Abstract service
• Bao.ac.cn - Abstract service
• eso.org - Abstract service
• iucaa - Abstract service
• nao.jp - Abstract service
• nottingham - Abstract service
• inasan.rssi.ru - Abstract service
• Astronomy & Astrophysics abstracts at CDS
• PASP abstracts at CDS
• Astronomy & Astrophysics Online
• Astronomy & Astrophysics Supplements Online
• Astrophysical Journal Online (ApJ)
• The Astronomical Journal
• LANL Astrophysics Preprint Archives: astro-ph
• Astrophysics and Space Sciencex
• Astronomy and Astrophysics (A&A)
• AstroWeb Consortium
• Annual Review of Astronomy and Astrophysics (ARA&A)
• Astronomy and Astrophysics Reviews (A&AR)
• Astronomy Reports
• AGU Publications
• Bulletin of American Astronomical Society (BAAS)
• Kluwer Online - Astrophysics
• Kluwer Online - Astrophysics and Space Science (Ap&SS)
• Kluwer Online - IAU Symposia
• Kluwer Online - Solar Physics (SPh) (2nd mirror)
• Kluwer Online - Space Science Reviews (Space Sci. Rev.)
• Elsevier Science - New Astronomy  (publications)
• Advances in Space Research (Adv. Space Res.)
• OJPS - Online Journal Publishing Service
• OJPS - Astronomy Letters
• OJPS - Astronomy and Geophysics
• Journal of Geophysical Research (JGR)
• Mon. Not. of the Royal Astron. Soc. (MNRAS)
• Chinese Journal of Astronomy and Astrophysics (ChJAA)
• Publications of the Astronomical Society of Japan (PASJ)
• Publications of the Astronomical Society of the Pacific (PASP)
• Publications of the Astronomical Society of Australia (PASA)
• Nature (Nat)
• Science (Sci)
• New Scientist
• Sky and Telescope (News Bulletin)
• Image Publications Site
• Proceedings of SPIE The International Society for Optical Engineering
• Science Citation Index Service (SCI Service)
• IAU Circulars --- (ASP Author's Instructions)

Databases, Astronomical Catalogs and Star Maps

• APS POSS I Finder Charts
• Astronomical Data Center, NASA/GSFC
• Astrophysics Data Systems - ADS (Mirror Strasbourg)
• Astronomy Picture of the Day
• BATSE Solar Flare Server
• CDS Online Catalogs
• DARTS at ISAS
• Database at NAOJ/ADAC
• ESO HST Guide Star Catalogue
• FITS Support Office
• FITS archive at NRAO
• HESSI Synoptic Data Archive
• HST Science Search
• JPL (On-Line) Solar System Tools (ephemeris etc.)
• Mt. Wilson Observatory Star Map (Generate Your Own!)
• NASA Extragalactic Database (NED)
• NASA Online Photo Database
• National Geophysical Data Center(NGDC), NOAA
• Planetary Sciences at the NSSDC
• Princeton's Galaxy Catalog
• SkyView Virtual Internet Observatory
• Solar Data Analysis Center at NASA Goddard SFC
• Space Image Libraries
• Star of the Week
• StarTrax Online Catalogs
• Steward Observatory Asteroid Database
• STScI Catalogs and Surveys Branch
• STScI Digitized Sky Survey
• Sunspot Index Data Center, Brussels
• The National Space Sciences Data Center (NSSDC)
• The Online HST Guide Star Catalogue
• The SIMBAD astronomical database
• U.S. Naval Observatory's Astronomical Almanac

Organizations

• AAS - The American Astronomical Society
• American Geophysical Union (AGU)
• American Institute of Physics Home Page (AIP)
• Canadian Astronomy Data Centre International Astronomy Meetings
• Carnegie Observatories
• CDS Strasbourg - SIMBAD
• Chinese Astronomical Society (CAS)
• Committee on Space Research (COSPAR)
• Division of Planetary Sciences of the AAS
• EGSO project - European Grid of Solar Observations
• European Space Agency (ESA)
• ESA: ISO Home Page
• European Southern Observatory
• HEASARC (High Energy Astrophysics Science Archive Reserach Center)
• International Astronomical Union (IAU)
• IPAC Staff and Expertise
• Japanese Astronomical Society (JAS)
• Jet Propulsion Laboratory
• Lunar and Planetary Institute (LPI)
• National Aeronautics and Space Administration - NASA
• Royal Astronomical Society (RAS)
• Solar Physics Division of the AAS --- ( SolarNews ) --- (SolarMail )
• STSCI - Space Telescope Science Institute Home Page
• The American Physical Society
• The Archimedes Institute
• The Astronomical Society of the Pacific (ASP)
• The International Society for Optical Engineering (SPIE)
• The Internet Pilot To Physics Home Page
• The Planetary Society

NASA

• The NASA Homepage
  Space Physics Homepage (NASA)
  Participating Solar SPDS Systems
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• NASA / Goddard Space Flight Center (GSFC)
  Solar Data Analysis Center (SDAC)
  National Space Science Data Center (NSSDC)
  Space Physics at the NSSDC
  Solar Physics at NSSDC
  Solar Flare Theory Web Pages
  Eclipse Home Page
  Search NSSDC's Web Site
  Space Physics Catalog (SPyCAT)
  SPDS-Cosmic and Heliospheric Data
•  
• NASA / Marshal Space Flight Center (MSFC)
  Space Sciences Laboratory (SSL)
  Solar Physics
• NASA / Jet Propulsion Laboratory (JPL)
  Ulysses homepage at JPL
  Minimum Solar Mission Scientific Rationale and Mission Concept

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IDL, Software - Sites

• Solar Software --- SSW
• Astronomical Software Directory Service
• SoHO Analysis Guide
• TRACE Analysis Guide
• Yohkoh Analysis Guide
  Vol. 1, User's Guide
  Vol. 2, Reference Guide
  Vol. 3, Instrument Guide
• IDL Astronomy User's Library
• IDL Library at Forschungszentrum Juelich
• Coyote's Guide to IDL Programming
• Practical IDL Propramming by Liam E. Gumley
• Pete Riley's IDL Home Page
• Mapping Package
• Markwardt IDL Programs
• Official RSI Homepage
• Web Tools for Astronomical Catalog Viewing by ADC
• Other Software

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Meta Astronomy Sites

• Astronomical Internet Resources
• AstroNet- An Incredible List of Astronomy Links
• AstroWeb: Astronomy/Astrophysics Resources On The Internet
• Carnegie Institute of Washington Astronomy Links
• CosmoBrain
• FTP-able Astronomy/Astrophysics Resources On The Internet
• Mark Maimone's Space Links
• Queen Mary and Westfield College University of London Astronomy Resources
• STScI AstroWeb Resources (WebStars)
• STSCI: Astronomy Sites on the Internet
• The Space Web Reference Page, the most comprehensive resource for space physics
• U of Toronto Astronomy Library List of Web Sites
• USENET FAQs On Space Topics
• USGS Astronomy Links
• Woodworth's Astronomy Web Link
• Ames Area Amateur Astronomers
• Physics and Astronomy online education

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