Astronomy and Astrophysics WWW Resources

(These sources may "dry up". Please tell us if you are having difficulties reaching a particular site.)

• Astrophysical Constants (Rev. Part. Phys., pdf file)
• arXiv.org e-Print archive
• The NASA Astrophysics Data System (ADS)
• AstroWeb (Astronomy web sites)
• Optical Astronomy Facilities
• Dictionary of Nomenclature of Celestial Objects
• The Sun
  • Solar Physics (Science Directorate MSFC)
  • A Pictorial Introduction (white light, magnetograms, x-rays, H alpha, etc.)
  • Current solar images (SOHO, Yohkoh, spectroheliograms, coronameter, etc.)
  • Solar Astronomy Facilities
  • SIDC (World Data Center for the Sunspot Index)
• The Solar System
  • Information on all known bodies in orbit (JPL's Solar Systen Dynamics Group)
  • The Planets
  • Planetary Astronomy Links
  • International Meteor Organization
  • Eclipses (NASA/GSFC)
  • Planetary Fact Sheet (NASA's NSSDC)
  • Gary W. Kronk's Cometography
  • Near-Earth Object Program (NASA)
• Stars and Stellar Systems
  • Hipparcos Space Astrometry Mission
  • Hipparcos and Tycho Catalogues Search Facility
  • Green's Catalogue of Supernova Remnants
  • Chandra Supernova Remnant Catalog
  • Alcyone Astronomical Software (Bright Star Catalog, e.g.)
  • 100 Nearest Star Systems (as of July 1, 2004; from the Research Consortium on Nearby Stars, http://www.chara.gsu.edu/RECONS/)
• Object Catalogs
  • Your Sky (Produces finding charts, radiants of meteor showers, etc.)
• Messier Objects
• Extragalactic Astronomy
  • A Knowledgebase for Extragalactic Astronomy and Cosmology
  • NASA/IPAC Extragalactic Database
• Spherical Astronomy and Astrometry
  • Naval Observatory Master Clock, Time Scales, etc.
  • Sunrise, Sunset, Moonrise, Moonset in the U.S.
  • Conversion of Equatorial to Galactic Coordinates (From FUSE)
  • Precession Calculator (from FUSE)
  • Julian Date and Sun's Position (from FUSE)
  • Local Standard of Rest (from FUSE)
  • Systems of Time (U.S Naval Observatory)
  • Hipparcos Space Astrometry Mission
  • Calendar Conversion Tool (JD, MJD, DOY)
  • Coordinate Conversion and Precession Tool
• Astronomical Facilities
• Space Telescope Science Institute
• Data Bases and Archives
  • Hipparcos and Tycho Catalogues Search Facility
  • SIMBAD Astronomical Data Base
  • ADC (GSFC's Astronomical Data Center)
  • Basic Data on Galaxy Groups & Clusters (ADC)
  • Basic Data on Galaxies (ADC)
  • Basic Data on Quasars and AGN (ADC)
  • Basic Stellar Data (ADC)
  • Solar System (ADC)
  • Variable Stars (ADC)
  • Interstellar Medium (ADC)
  • CDS (Centre de Donnees astronomiques de Strasbourg)
  • ESO/ST-ECF (Science Archive Facility Services
• Software
  • The IDL Astronomy User's Library
• Astronomical Techniques
  • JPL Interferometry Center of Excellence
  • Michelson Interferometry Summer School
  • Optical and UV Astronomy in the Internet Age (Daniel Golombek, STSI)
• On-line courses
  • Galaxies and the Universe (Graduate level)
• Books
  • Diffuse Matter in the Universe (M.A. Dopita & R.S. Sutherland, 2001, 361 pp., pdf)
  • Stellar Atmospheres (J. B. Tatum, Univ. Victoria, pdf)
• Miscellaneous
  • An Atlas of the Universe (There are nine main maps on this web page, each one approximately ten times the scale of the previous one. The first map shows the nearest stars and then the other maps slowly expand out until we have reached the scale of the entire visible universe.)
  • Galactic Neutral Hydrogen Density Calculator

mvz@alum.mit.edu