Astronomical  Links
Observation and astronomical images
  • Hubble Space Telescope's photos
  • Messier objects
  • Observation of artificial satellites
  • The constelations
  • Multispectral images of astronomical objects
  • Fundamental Astronomy
  • A basic course in astronomy
  • Spherical trigonometry
  • Celestial coordinates
  • One more on celestial coordinates
  • Finder of terrestrial coordinates
  • Systems of time in astronomy
  • Julian date calculator
  • Universal Time Coordinated, now!
  • Local Times in cities of the world, now!
  • Astronomic catalogs
  • "Simbad" finder of astronomic bodies
  • "VizieR" finder of astronomic bodies
  • Galactic clusters
  • Interactive astronomic dictionary
  • Some useful constants
  • Earth rotation service
  • International Celestial  Reference System
  • Earth orientation (polar motion)
  • Earth rotation
  • Past, present and future eclipses
  •  
    Celestial mechanics
  • Bureau des longitudes Ephemerides generator
  • JPL Ephemerides generator
  • Complete Sun and Moon data for one day
  • Basics on celestial mechanics
  • A nice course on newtonian mechanics
  • The two-body problem
  • World's largest optical telescopes
  • Recommendation for your first telescope
  • Atomic spectra database
  • Photometry and radiometry
  • The solar system
  • Celestial Bodies and Astronomy
  • A lot of information about the  solar system
  • The space weather (solar wind and auroras)
  • Comets currently visible
  • Bright comets
  • Minor planets (near asteroids, centaurs, plutins, etc.)
  • Moon crater nomenclature
  •  
    Astronautics
  • Encyclopedia of artificial  satellites
  • National Archives info on space exploration
  • What is an artificial satellite?
  • Bulletins on satellite's launches
  • Everything on space shuttle
  • Astronautics news
  • Space exploration
  • Mars Exploration
  • USA manned missions history
  • Basic concepts on space flight
  • Spot artificial satellites from Bogotá (Colombia)
  •  
    Cosmology
  • General relativity course
  • Cosmology course
  • Finger information for extragalactic objects

  • The sound of pulsars
  • Latest supernovae
  • Basic course on cosmology and astrophysics (in spanish)
  • Atomic emission lines
  • Updated emisssion lines (CHIANTI)
  • Excelent course on astrophysics
  • Spectroscopy and  CCD
  • A basic course on astrophysics
  • Open clusters  server
  • Searching spectra from SDSS (6 release)
  • Searching spectra from SDSS (8 release)
  • Quasars and Active Galactic Nuclei
  • Basics on AGNs
  • Excelent description of Seyfert galaxies
  • Teaching Tools for Educators

    • Professional  Astronomy
  • Professional journals in astronomy
  • Server of journals from NASA
  • Pre-prints in astrophysics
  • LaTeX manual on line
  • Cool course in LaTeX
  • Fundamental instructions in IDL
  • IDL astronomy User's library
  • CvLac (Colciencias)
    •  
      Astrobiology and extrasolar  planets



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