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    timeanddate_com Timeanddate.com current time (world clock) and online and printable ca… #science #astronomy #calendars and timek…
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    hubblesite_org Hubblesite.org embark on a journey of discovery with the hubble space… #science #astronomy #observatories #optical and infrared
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    spaceweather_com Spaceweather.com spaceweathercom -- news and information about meteor s… #science #astronomy #solar system #sun-earth interacti…
    22261 246
    opticsplanet_com Opticsplanet.com on-line store with wide selection of brand name binocu… #science #astronomy #products and servic… #telescopes
    25340 -177
    aas_org Aas.org #science #astronomy
    30096 888
    seti_org Seti.org #science #astronomy #extraterrestrial li… #seti
    34153 777
    skyandtelescope_com Skyandtelescope.com #science #astronomy #publications
    37912 1461
    cloudynights_com Cloudynights.com #science #astronomy #amateur #product reviews
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    aanda_org Aanda.org astronomy & astrophysics (a&a) is an international jou… #astronomy & astroph… #edp sciences
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    spacetelescope_org Spacetelescope.org esahubble #science #astronomy #observatories #optical and infrared
    46254 1638
    science20_com Science20.com the world's best scientists. the internet's smartest … #science 20 #darwin #galileo #science
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    science_gov Science.gov sciencegov is a gateway to government science informat… #government science #us government scien… #science portal #science gateway
    58742 1829
    imo_net Imo.net #science #astronomy #solar system #small bodies
    75635 55
    noao_edu Noao.edu #science #astronomy #observatories #optical and infrared
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    n2yo_com N2yo.com #science #astronomy #amateur #satellites
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    amsmeteors_org Amsmeteors.org #science #astronomy #amateur #organizations
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    vortexoptics_com Vortexoptics.com #science #astronomy #products and servic… #telescopes
    94229 42
    gemini_edu Gemini.edu #science #astronomy #observatories #optical and infrared
    98627 -3018
    celestron_com Celestron.com #science #astronomy #products and servic… #telescopes
    103218 -1492
    bushnell_com Bushnell.com #science #astronomy #products and servic… #telescopes
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    astronomynow_com Astronomynow.com #science #astronomy #publications
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    aavso_org Aavso.org #science #astronomy #amateur #organizations
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    keckobservatory_org Keckobservatory.org #science #astronomy #observatories #optical and infrared
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    lowell_edu Lowell.edu #science #astronomy #observatories #optical and infrared
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    ucolick_org Ucolick.org #science #astronomy #solar system
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    telescope_com Telescope.com #science #astronomy #products and servic… #telescopes
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    swarovskioptik_com Swarovskioptik.com #science #astronomy #products and servic… #telescopes
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    psi_edu Psi.edu #science #astronomy #solar system
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    worldwidetelescope_org Worldwidetelescope.org #science #astronomy #amateur #sky maps and atlases
    161732 5712
    galaxyzoo_org Galaxyzoo.org #science #astronomy #galaxies
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    scientificsonline_com Scientificsonline.com #science #astronomy #products and servic… #telescopes
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    ras_org_uk Ras.org.uk #science #astronomy #data archives
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    saao_ac_za Saao.ac.za #science #astronomy #observatories #optical and infrared
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    rasc_ca Rasc.ca #science #astronomy
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    kalmbach_com Kalmbach.com #science #astronomy #products and servic… #books and magazines
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    astrosociety_org Astrosociety.org #science #astronomy #amateur #organizations
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    agenaastro_com Agenaastro.com #science #astronomy #products and servic… #telescopes
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    highpointscientific_com Highpointscientific.com #science #astronomy #products and servic… #telescopes
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    meade_com Meade.com #science #astronomy #products and servic… #telescopes
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    mreclipse_com Mreclipse.com #science #astronomy #eclipses #occultations and tr…
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    astronomerstelegram_org Astronomerstelegram.org #science #astronomy #publications
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    startalkradio_net Startalkradio.net #science #astronomy #news and media
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    pixinsight_com Pixinsight.com #science #astronomy #software #image processing an…
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    astrobiology_com Astrobiology.com #science #astronomy #extraterrestrial li…
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    optcorp_com Optcorp.com #science #astronomy #products and servic… #telescopes
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    lamost_org Lamost.org #science #astronomy #observatories #optical and infrared
    333864 -7631
    projectpluto_com Projectpluto.com #science #astronomy #software #desktop planetarium…
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    universesandbox_com Universesandbox.com #science #astronomy #software #space simulation
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    mtwilson_edu Mtwilson.edu #science #astronomy #observatories #optical and infrared
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    astropix_com Astropix.com #science #astronomy #amateur #astrophotography an…
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    setileague_org Setileague.org #science #astronomy #extraterrestrial li… #seti
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    solstation_com Solstation.com #science #astronomy #amateur #sky maps and atlases
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    aura-astronomy_org Aura-astronomy.org #science #astronomy #observatories
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    darkenergysurvey_org Darkenergysurvey.org #science #astronomy #cosmology #cosmological consta…
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    wikisky_org Wikisky.org #science #astronomy #amateur #sky maps and atlases
    531981 -5577
    calsky_com Calsky.com #science #astronomy #calendars and timek…
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    skymaps_com Skymaps.com #science #astronomy #amateur #sky maps and atlases
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    astroleague_org Astroleague.org #science #astronomy #amateur #organizations
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    siliconsky_com Siliconsky.com #science #astronomy #amateur
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    ianridpath_com Ianridpath.com #science #astronomy #amateur #constellations
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    bisque_com Bisque.com #science #astronomy #software #desktop planetarium…
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    astronomics_com Astronomics.com #science #astronomy #products and servic… #telescopes
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    exoplanets_org Exoplanets.org an interactive table and plotter for exploring and dis… #science #astronomy #extrasolar planets
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    stargazing_net Stargazing.net #science #astronomy #amateur
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    newgrange_com Newgrange.com #science #social sciences #archaeology #topics
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    opticswarehouse_co_uk Opticswarehouse.co.uk #science #astronomy #products and servic… #telescopes
    605975 20765
    rothervalleyoptics_co_uk Rothervalleyoptics.co.uk #science #astronomy #products and servic… #telescopes
    626452 11535
    naoj_org Naoj.org #science #astronomy #observatories #optical and infrared
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    bigear_org Bigear.org #science #astronomy #observatories
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    meteorite_com Meteorite.com #science #astronomy #products and servic…
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    skywatcher_com Skywatcher.com #science #astronomy #products and servic… #telescopes
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    telescopes_net Telescopes.net #science #astronomy #products and servic… #telescopes
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    ascom-standards_org Ascom-standards.org #science #astronomy #software
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    satobs_org Satobs.org #science #astronomy #amateur #satellites
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    opticsforyou_com Opticsforyou.com #science #astronomy #products and servic… #telescopes
    912190 -50287
    spacew_com Spacew.com #science #astronomy #solar system #sun-earth interacti…
    914337 -1934
    konkoly_hu Konkoly.hu #science #astronomy #observatories #optical and infrared
    918929 546
    pari_edu Pari.edu #science #astronomy #amateur #radio astronomy
    958563 -39700
    celestiamotherlode_net Celestiamotherlode.net #science #astronomy #software #space simulation
    964381 -25754
    richplanet_net Richplanet.net #science #astronomy #extraterrestrial li…
    968118 -23468
    astronomycafe_net Astronomycafe.net #science #astronomy #amateur
    991285 -31398
    company7_com Company7.com #science #astronomy #products and servic… #telescopes
    995285 -16725
    televue_com Televue.com #science #astronomy #products and servic… #telescopes
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    astro-physics_com Astro-physics.com #science #astronomy #products and servic… #telescopes
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    rc-astro_com Rc-astro.com #science #astronomy #amateur #astrophotography an…
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    starizona_com Starizona.com #science #astronomy #products and servic… #telescopes
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    skymaponline_net Skymaponline.net #science #astronomy #amateur #sky maps and atlases
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    princetoninstruments_com Princetoninstruments.com #science #astronomy #products and servic… #telescopes
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    sgo_fi Sgo.fi #science #astronomy #solar system
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    mmto_org Mmto.org #science #astronomy #observatories #optical and infrared
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    indilib_org Indilib.org #science #astronomy #software
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    stoff_pl Stoff.pl #science #astronomy #amateur #satellites
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