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(Click for frequent words.) 65 astronomer 62 amateur astronomers 60 skywatcher 59 astrophotographer 59 astrophysicist 56 astronomy 55 astronomy buff 54 stargazer 54 astronomers 54 telescope 52 observatory 52 Astronomer 51 meteor shower 51 star gazer 51 Observatory astronomer 50 telescopes 50 aurora 50 Telescope 49 meteorite hunter 49 Astronomy 49 birder 49 ornithologist 49 Amateur astronomers 49 inch Samuel Oschin 49 Spaceweather.com 49 physicist 49 astrophotography 48 planetary astronomer 48 stargazers 48 astrophysicists 48 infrared telescope 48 sky gazer 47 Sidewalk Astronomers 47 Siding Spring 47 skywatchers 47 Astronomical Society 47 Amateur Astronomers 47 Astrophysicist 47 Steward Observatory 46 geologist 46 theoretical physicist 46 exoplanet hunter 46 ufologist 46 Explorer WISE 46 Perseid meteor 46 Perseid meteor shower 46 star gazers 46 amateur naturalist 46 bird watcher 46 Amateur astronomer 46 microlensing 45 meteors 45 Comet Holmes 45 Lick Observatory 45 aurora borealis 45 Ted Molczan 45 Comet Lulin 45 Spacewatch 45 planetary scientist 45 inch refracting telescope 45 Epsilon Aurigae 45 Palomar Observatory 45 meteor 45 volcanologist 45 SpaceWeather.com 45 Optical Gravitational Lensing Experiment 45 meteorite 44 Lowell Observatory 44 XMM Newton 44 optical telescope 44 cosmologist 44 pyrotechnician 44 infrared observatory 44 Hubble astronomer 44 CfA 44 skywatching 44 Cassini imaging 44 Comet McNaught 44 Gemini Telescope 44 Gemini Observatory 44 Keck Observatory 44 optometrist 44 Voorwerp 44 Amateur Astronomy 44 astronomical objects 43 Planetary Science Institute 43 Paranal Chile 43 ghost hunter 43 supermoon 43 naturalist 43 brightest comet 43 Slooh 43 James Fanson 43 Smithsonian astronomer 43 Clyde Tombaugh 43 HiRISE 43 Mount Stromlo Observatory 43 lunar eclipse 43 avid birder 43 Amateur Astronomer 43 comet 43 geoscientist 43 comet McNaught 43 Pan STARRS 43 Hanny Voorwerp 43 comet Hale Bopp 43 gamma ray burst 43 meteor streaking 43 Lulin 43 paranormal investigator 43 meteorite hunters 43 Comet Hale Bopp 42 HiRISE camera aboard 42 supernova 42 beekeeper 42 MIT Haystack Observatory 42 Martin Gutoski 42 Dennis Mammana 42 birdwatcher 42 Astronomical 42 gamma ray observatory 42 Ultraviolet Optical Telescope 42 gamma ray bursts 42 Keck Telescope 42 WM Keck Observatory 42 Dobsonian telescope 42 Jedicke 42 Optometrist 42 avid birdwatcher 42 amateur genealogist 42 watercolor artist 42 SPACE.com 42 Leonids 42 DISR 42 meteor showers 42 electrical engineer 42 Stargazers 42 orbiting telescope 42 ophthalmologist 42 planetarium 42 Radio Astronomy Observatory 42 theoretical astrophysicist 42 Giovanni Cassini 42 mountaineer 42 amateur skywatchers 42 Astronomers 42 LOFAR 42 botanist 42 particle physicist 42 ESO Paranal Observatory 42 cosmic cannibal 42 meteoroid 42 unaided eye 42 Robert Jedicke 41 meteor fireball 41 distant quasar 41 Fermi telescope 41 auroras 41 NASA astrophysicist 41 Telescopes 41 Carey Lisse 41 planet orbiting 41 LORRI 41 birding 41 Comet Machholz 41 Solar Dynamics Observatory 41 WISE infrared 41 opthamologist 41 optical telescopes 41 Gutoski 41 Digitized Sky Survey 41 observatories 41 amateur archeologist 41 Leonid meteor shower 41 Gerard Kuiper 41 pinhole camera 41 Nasa Kepler 41 Armagh Observatory 41 extrasolar planet 41 extrasolar planetary systems 41 avid traveler 41 UKIRT 41 Dave Reneke 41 telescopic observations 41 Subaru Telescope 41 inch Schmidt Cassegrain 41 Minnesota Starwatch 41 herpetologist 41 Supernova #A 41 Carnegie Observatories 41 Comet #P 41 HiRISE camera 41 meteorite craters 41 X ray telescope 41 avid amateur astronomer 41 Astrophysics MOA 41 ESA XMM Newton 41 Gemini telescopes 41 Cassini ultraviolet 41 Smithsonian Astrophysical Observatory 41 seismologist 41 occultation 41 amateur archaeologist 41 aeronautical engineer 41 atmospheric chemist 41 distant galaxy 41 SOHO spacecraft 41 Comet #P/Holmes 41 RXTE 41 NOAO 41 Space Telescope 41 Faulkes Telescope 41 Fritz Zwicky 41 amateur botanist 41 Halley comet 41 volcano observatory 40 geophysicist 40 supernova remnant 40 Gravitational lensing 40 Geminids 40 X ray telescopes 40 infrared mapping spectrometer 40 extrasolar planets 40 Evolution Explorer 40 lunar meteorite 40 aurorae 40 Orion Nebula 40 annular solar eclipse 40 Lyrids 40 inch refractor telescope 40 ROSAT 40 Infrared Array Camera 40 Filippenko 40 ESO VLT 40 physicists 40 observer 40 NASA STEREO 40 optician 40 Whipple Observatory 40 Cassini Huygens spacecraft 40 StarDate 40 Hubble Space Telescope 40 Nasa spacecraft 40 orbiting Hubble Space Telescope 40 Galaxy Evolution 40 brightest supernova 40 Machholz 40 Wolszczan 40 astrophysics 40 Jenniskens 40 magnetar 40 USGS Cascades Volcano 40 Jay Melosh 40 glassblower 40 ESO telescopes 40 astronomer Clyde Tombaugh 40 annular eclipse 40 astronomer Johannes Kepler 40 astronaut 40 Astronomy buffs 40 celestial observations 40 Arecibo Observatory 40 X ray observatory 40 Upsilon Andromedae 40 conservationist 40 partial eclipse 40 infrared camera 40 Space.com 40 Alex Filippenko 40 spaceweather.com 40 Marc Kuchner 40 Aurora Borealis 40 SkyCenter 40 Rosaly Lopes 40 THEMIS 40 planetary Transits 40 cartographer 40 FORCAST 40 opthalmologist 40 Cascades Volcano Observatory 40 earthshine 40 Corot 7b 40 Geminid meteor shower 40 Perseids 40 NanoSail D 40 supernovae 39 Hobby Eberly 39 Spitzer Space Telescope 39 Leonid meteor showers 39 supernovas 39 Thierry Legault 39 Astrophysics 39 gaseous planet 39 eclipse chaser 39 stellar occultations 39 exo planet 39 GRB# 39 lepidopterists 39 GALEX 39 fireball streaking 39 Celestron 39 exoplanetary 39 total lunar eclipse 39 moon Ganymede 39 Kepler Mission 39 ASTRONOMERS 39 SN #gy 39 stargazing 39 zoologist 39 rockhound 39 Observatory telescope 39 Kuiper Belt Objects 39 mineralogist 39 computer programmer 39 Caltech astronomer 39 NASA Chandra 39 submillimetre 39 Fomalhaut b 39 VIRTIS 39 astronomy buffs 39 Meteor Showers 39 spectrograph 39 photojournalist 39 orbiting 39 Kepler spacecraft 39 Kepler 39 celestial phenomenon 39 adaptive optics 39 photographer 39 Mutual UFO 39 Hinode 39 avid bird watcher 39 WIYN Observatory 39 NASA Kepler 39 celestial object 39 cryptozoologist 39 GRB #B 39 cosmic ray 39 Jodrell Bank Observatory 39 quasars 39 Keck telescope 39 Kitt Peak 39 CRISM 39 MMT Observatory 39 Ring Nebula 39 ESA Herschel 39 Herschel telescope 39 plein air painter 39 Sara Seager 39 Cascade Volcano Observatory 39 Andromeda galaxy 39 Ornithologist 39 Gehrels 39 astronomical observatory 39 imaging spectrometer 39 gravitational lensing 39 RAS Observatory 39 Aqua satellite 39 zodiacal light 39 Nikon D# Kowa 39 orbiting Chandra 39 SN #A 39 Nousek 39 amateur ornithologist 39 ceramicist 39 avid canoeist 39 bird bander 39 distant galaxy clusters 39 caver 39 planetary geologist 39 astronomer Edwin 39 CoRoT satellite 38 luthier 38 Edi Sunardi 38 Grote Reber 38 infrared spectrograph 38 storm chaser 38 birders 38 amateur 38 Omega Centauri 38 ESO Very Large Telescope 38 Hubble telescope 38 Andromeda Galaxy 38 Comet Hartley 2 38 painter 38 Cassini 38 mycologist 38 constellations planets 38 Geological Survey Cascades Volcano 38 constellation Carina 38 watercolorist 38 UFO 38 astrometry 38 Lyrid meteor shower 38 Fred Espenak 38 gravitational microlensing 38 NASA Fermi Gamma 38 Mauna Kea Hawaii 38 entomologist 38 Observatory 38 mechanical engineer 38 Herzberg Institute 38 Spitzer infrared 38 geocacher 38 rocketeer 38 astronomical telescopes 38 Molczan 38 Dynamics Observatory 38 CSIRO Parkes radio 38 apiarist 38 fainter objects 38 Starfire Optical Range 38 mathematician 38 geochemist 38 Boethin 38 nebulae 38 type Ia supernova 38 star Fomalhaut 38 National Optical Astronomy 38 scientist 38 amateur paleontologist 38 IfA 38 spiral galaxy NGC 38 Triangulum Galaxy 38 solar eclipse 38 birding enthusiast 38 WIYN 38 Lyot 38 sky gazers 38 radiotelescope 38 antique dealer 38 HD#b 38 archaeologist 38 eclipse chasers 38 AB Aurigae 38 Galilean Nights 38 glaciologist 38 Quadrantid meteor shower 38 Nikku Madhusudhan 38 Exoplanet 38 horticulturist 38 WMAP satellite 38 navigator Abel Tasman 38 pallasite meteorite 38 asteroid 38 spacecraft Cassini 38 RHESSI 38 iron meteorite 38 Quadrantids 38 #P/Holmes 38 SPIRE instrument 38 ESO 38 Astrophysicists 38 Stardome Observatory 38 Meteorite 38 moonrise 38 atmospheric scientist 38 infrared telescopes 38 dimming starlight 38 Grillmair 38 Bryan Gaensler 38 astro photography 38 Astrophysical Institute 38 galaxy NGC 38 Nasa Mars Reconnaissance 38 astronomical observations 38 Halton Arp 38 Tycho supernova 38 NASA astrobiologist 38 Hipparchus 38 Southern Observatory ESO 38 Astronomical Observatory 38 hobbyist 38 picture framer 38 Dalcanton 38 Schmidt Cassegrain telescope 38 refracting telescope 38 Maunder minimum 38 astronomical telescope 38 TSN PZ camera 38 Haehnelt 38 MUFON 38 exoplanet 38 Perseids meteor shower 38 Hubble 38 robotic telescopes 38 GJ #b [002] 38 Samuel Oschin Telescope 38 Herschel SPIRE 38 Telescope BAT 38 COROT 38 Komossa 38 HUDF 38 partial lunar eclipse 38 Comet 9P/Tempel 1 38 nurseryman 38 Physicist 38 Lunar eclipse 38 Infrared Mapping Spectrometer VIMS 38 Geminids meteor shower 38 auroral displays 38 Observatories 38 Halley Comet 38 rocky extrasolar planet 38 Hubble Near Infrared 38 NASA Far Ultraviolet 38 KIPAC 37 celestial objects 37 millisecond pulsar 37 Astrophysical Journal Letters 37 Kitt Peak Observatory 37 eyepiece #/#s f/#.# 37 Herschel 37 ESO astronomer 37 protoplanetary disks 37 Reconnaissance Orbiter 37 fossil hunter 37 Cosmic Background Explorer 37 AU Mic 37 extrasolar 37 skygazers 37 Comet Halley 37 Butterfly Nebula 37 constellation Orion 37 HD #b [001] 37 panoramic camera 37 Leiden Observatory 37 astrophysical 37 Meteor Shower 37 nebulas 37 orbiting Hubble telescope 37 Lagoon Nebula 37 gamma ray telescope 37 horticulturalist 37 Alaska Fairbanks Geophysical 37 Carina constellation 37 Wilkinson Microwave Anisotropy Probe 37 observatory telescope 37 master carver 37 archeologist 37 ESA Integral 37 galaxy M# [001] 37 Shri Kulkarni 37 printmaker 37 Infrared Telescope Facility 37 Anisotropy Probe WMAP 37 meteorites 37 avid collector 37 Lulin Observatory 37 radiologist 37 flyby Cassini 37 infrared astronomy 37 SNfactory 37 Nasa astronaut 37 rover panoramic 37 theoretical physicist Stephen Hawking 37 Rosetta orbiter 37 Arno Penzias 37 inch refractor 37 vulcanologist 37 Taurids 37 MG J# +# 37 Planck satellite 37 starburst galaxy 37 OGLE 37 Fermi LAT 37 Bill Borucki Kepler 37 devilish wink 37 SOHO comet 37 contrail 37 realist painter 37 PSR B# +# 37 AKARI 37 coronal mass ejection 37 Orionids 37 interstellar dust 37 protoplanet 37 USGS geologist 37 Orion constellation 37 Mars Reconnaissance Orbiter MRO 37 transiting exoplanet 37 Rosette Nebula 37 KH #D 37 fading afterglow 37 eyepiece 37 MicroFUN 37 HARPS instrument 37 gravitational wave 37 elliptical galaxy 37 landscapist 37 Keck telescopes 37 Mars Reconnaissance Orbiter 37 Galactic cosmic rays 37 barred spiral galaxy 37 Aurigid 37 Kepler Space Telescope 37 X ray observatories 37 Renu Malhotra 37 Near Infrared Camera 37 Amateur Astronomers Association 37 LSST 37 giant elliptical galaxy 37 Saturn Cassini 37 ESA Envisat 37 celestial 37 Lunar Eclipse 37 P/# A2 37 Telescope LSST 37 GRBs 37 cinematographer 37 Las Cumbres Observatory 37 Roden Crater 37 Observatory LIGO 37 Klekociuk 37 galaxy M# [002] 37 de Pater 37 orbiting Saturn 37 BP Psc 37 Brownie Hawkeye 37 William Herschel Telescope 37 Asteroid 37 Harvard Smithsonian 37 XMM Newton satellite 37 nightglow 37 HESS telescopes 37 Hyakutake 37 Earthlike planets 37 Burst Alert 37 gamma ray flares 37 Eta Aquarids 37 Heliospheric Observatory SOHO 37 Saturnian moon 37 Orionid meteor shower 37 total solar eclipse 37 THEMIS satellites 37 ray Space Telescope 37 palaeontologist 37 ASTRON 37 IYA# 37 Kepler telescope 37 Astronomy Observatory 37 Saturn Enceladus 37 N. Rathnasree 37 supernova explosion 37 X ray emission 37 kite flier 37 scuba diver 37 distant galaxies 37 UFOlogist 36 exo planets 36 extragalactic 36 Infrared Telescope 36 PSR J# 36 NASA Infrared Telescope 36 watercolor painter 36 moon Charon 36 substorms 36 MESSENGER 36 Planetary Scientist 36 cosmological distances 36 Bob Behnken 36 Royal Astronomical Society 36 microlensing events 36 meteor crater 36 orbiting Mars 36 occulted 36 #gy 36 AAVSO 36 avid quilter 36 infrared spectrometer 36 RS Ophiuchi 36 ophthamologist 36 Sombrero Galaxy 36 PlanetQuest 36 Galilean moons 36 thrilling stargazers 36 penumbral eclipse 36 noctilucent clouds 36 woodturner 36 orthopedic surgeon 36 jazz pianist 36 watercolourist 36 ceramist 36 IceCube 36 Konacki 36 Volcanologist 36 Jupiter moons 36 Infrared Telescope UKIRT 36 GRB # 36 GQ Lupi 36 gamma ray astronomy 36 TrES 4 36 interplanetary spacecraft 36 Suzaku X ray 36 Planetarium 36 elementary schoolteacher 36 Spectrograph 36 PASADENA Calif. Astronomers 36 Hubble Space Telescopes 36 CFHT 36 planets Uranus 36 Great Orion Nebula 36 Planetary Sciences seminar 36 Jupiter moon Io 36 Jennifer Heldmann 36 moons orbiting Saturn 36 lunar eclipses 36 ESA Planck 36 Storrie Lombardi 36 refractor 36 spectroscope 36 Geophysicist 36 Gehrz 36 National Astronomical Observatory 36 BLG #Lb 36 Saturn rings 36 woodworker 36 scuba diving instructor 36 astrobiologist 36 Perseid meteor showers 36 Edelman Planetarium 36 freelance photographer 36 Kawaler 36 spectrographic 36 X ray Telescope XRT 36 orbiting gamma ray 36 photometer 36 G#.# +#.# 36 chemist 36 supergiant star 36 Observatory STEREO 36 Galileo spacecraft 36 stone carver 36 schoolteacher 36 partial solar eclipse 36 X ray wavelengths 36 Hale Bopp 36 gemologist 36 reflection nebula 36 astronomer mathematician 36 waning gibbous 36 Global Surveyor spacecraft 36 Hawaiian Volcano Observatory 36 Perseid meteors 36 meter Keck telescopes 36 orbiting observatory 36 Observatory SDO 36 cosmic ray observatory 36 Curfs 36 SN #C 36 Mycological Society 36 Rosetta lander 36 STScI 36 Giovanni Schiaparelli 36 Descent Imager Spectral Radiometer 36 ornithology 36 NASA EPOXI mission 36 shutterbug 36 infrared ultraviolet 36 Astrophysical 36 avid scuba diver 36 Kieda 36 atmospheric physicist 36 gamma ray emission 36 astronomical observatories 36 blazar 36 carpenter 36 RS Oph 36 birdwatchers 36 Glaciologist 36 Cygnus Lyra region 36 penumbral lunar eclipse 36 paranormal investigators 36 Infrared Mapping Spectrometer 36 Laser Interferometer Gravitational Wave 36 constellation Cassiopeia 36 Geological Survey geologist 36 feng shui practitioner 36 gazer 36 eclipsing binary 36 Ritchey Chrétien 36 Earth Observatory 36 Gamma ray burst 36 photography 36 NASA Goddard 36 orbiting spacecraft 36 Impact Crater 36 exoplanet orbiting 36 Helix Nebula 36 Composite Infrared Spectrometer 36 SWIFT J#.# 36 planets orbiting sun 36 Astrophysical Journal 36 Upsilon Andromedae b 36 moon Io 36 Mission SRTM 36 metallurgist 36 JWST 36 Ultraviolet Imaging Spectrograph UVIS 36 faint galaxies 36 MPIfR 36 astronomical phenomena 36 meteorite crater 36 Edmund Halley 36 ultraviolet spectrograph 36 comet Lulin 36 bolide 36 ham radio 36 Multi Object Spectrograph 36 Submillimeter Array 36 comets 36 auroral 36 bird watchers 36 constellation Pegasus 36 outdoorsman 36 neurosurgeon 36 amateur photographers 36 Microlensing Observations 36 Earth Asteroid 36 La Silla Observatory 36 Galilean satellites 36 aperture telescope 36 neutrino particles 36 Rolf Kudritzki 36 GRB #A 36 freelance cartoonist 36 MN4 36 Andrea Ghez 36 Iapetus Saturn 36 birdwatching 36 electron microscope 36 Vulcanologist 36 discover Fomalhaut 36 Orion nebula 36 distant supernovae 36 planetary nebulas 36 Civil War buff 36 SDSS II 36 Planetary Lab 36 elliptical galaxy NGC 36 XMM Newton observations 36 Cosmic Evolution 36 ringed planet 36 Kuiper belt objects 36 NASA Wilkinson Microwave 36 mushroom hunter 36 APXS 35 Egyptologist 35 nebula 35 orbited Earth 35 WMAP 35 iReporter 35 visit http:/saturn.jpl.nasa.gov 35 Convection Rotation 35 dwarf galaxy 35 avid walker 35 Cancri e 35 Observatory Very 35 philatelist 35 OGLE TR #b 35 Very Large Array 35 star Spica 35 electrician 35 Patricia Tombaugh 35 Stanford Synchrotron Radiation Lightsource 35 mySKY 35 slender crescent 35 painter illustrator 35 Rathnashree 35 ARISS 35 UVOT 35 Cassini spacecraft 35 astrometric 35 Fermi Gamma ray 35 trans Neptunian objects 35 Large Telescope Salt 35 mu Arae 35 binocular telescope 35 Percival Lowell 35 Comet NEAT 35 Anisotropy Probe 35 solar flares 35 Mount Lemmon SkyCenter 35 muralist 35 David Spergel 35 galaxies nebulae 35 orbiting observatories 35 Extrasolar planets 35 USGS seismologist 35 Planetary Transits 35 Adaptive Optics 35 Cygnus X 35 lepidopterist 35 Michael Studinger 35 Muchachos Observatory 35 NASA THEMIS 35 Astrophysical Research 35 Field Imager 35 space.com 35 AGNs 35 bass angler 35 manned lunar landing 35 gamma ray 35 Grammier 35 ionospheric 35 Beta Pictoris b 35 tinkerer 35 avid snowboarder 35 solar corona 35 abstract painter 35 SOAR telescope 35 WorldWide Telescope 35 Moon Mineralogy Mapper M3 35 ophthalmic surgeon 35 LIGO 35 Volcano Observatory 35 CoRoT 9b 35 Cassini flyby 35 historian 35 coronagraph 35 stellar occultation 35 Perseid shower 35 Space Telescopes 35 predawn sky 35 Skywatchers 35 constellation Cygnus 35 flyby spacecraft 35 Earthlike 35 van der Leeuw 35 Earth orbiting satellites 35 Spitzer Space Telescopes 35 Canary Telescope 35 UDFy # 35 afterglows 35 BFRO 35 ghost hunters 35 Webb Telescope 35 avid skateboarder 35 sunspot 35 planet Uranus 35 Project Ozma 35 infrared interferometry 35 YU# 35 planetary astronomy 35 Swift Tuttle 35 McKay planetary scientist 35 Chilean Atacama Desert 35 intergalactic spaceship 35 comets moons 35 UFO sighting 35 supernova remnant Cassiopeia 35 astrophotographers 35 active galactic nuclei 35 attosecond 35 Rychard Bouwens 35 paraglider 35 occultations 35 COROT 7b 35 reflector telescope 35 Gamma ray Burst 35 Geological Survey geophysicist 35 coronal loops 35 meteoroids 35 Guhathakurta 35 goldsmith 35 foreground galaxy 35 Hasselblad camera 35 gemmologist 35 Scheila 35 Nial Tanvir 35 sundog 35 Cerro Paranal 35 Gamma ray bursts 35 cosmologists 35 constellation Centaurus 35 Soyuz rocket carrying 35 Pancam 35 quasar 35 Gaensler 35 planetary nebula 35 neurologist 35 Richard Mushotzky 35 NASA Cassini 35 NASA Cassini orbiter 35 DEIMOS 35 field Infrared Survey 35 wildlife ecologist 35 Gondolo 35 red supergiant 35 Carnegie Institution planetary geologist 35 ENose 35 Great Observatories 35 Wolfgang Brandner 35 Saul Perlmutter 35 constellation Lyra 35 GROND 35 violinist 35 Interferometer VLTI 35 gravitational waves