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(Click for frequent words.) 68 stargazers 68 skywatchers 66 Amateur astronomers 65 astronomers 65 telescopes 65 star gazers 62 amateur astronomer 61 astronomy buffs 60 observatories 58 sky gazers 58 astrophotographer 57 astronomy 56 amateur skywatchers 56 skywatcher 55 birdwatchers 55 telescope 55 skygazers 54 birders 54 meteor shower 54 Telescopes 53 astrophysicists 53 bird watchers 53 Stargazers 53 Astronomy 53 skywatching 53 astrophotographers 52 microlensing 52 observatory 52 stargazer 52 celestial objects 52 Perseid meteor shower 52 Comet Lulin 52 astronomer 52 eclipse chasers 51 meteor showers 51 Geminids 51 Leonids 51 XMM Newton 51 meteorite hunters 51 Telescope 51 Sidewalk Astronomers 51 RAS Observatory 51 Astronomers 51 Orionids 51 optical telescopes 51 meteors 50 Quadrantids 50 astronomical objects 50 microlensing events 50 Perseids 50 Lowell Observatory 50 brightest comet 50 Spitzer Space Telescope 50 extrasolar planets 50 Comet Hale Bopp 50 Spacewatch 49 astronomical observations 49 ASTRONOMERS 49 stargazing 49 Astronomy buffs 49 star gazer 49 Optical Gravitational Lensing Experiment 49 Geminid 49 geo cachers 49 Leonid meteor showers 49 Amateur Astronomers 49 orbiting Hubble Space Telescope 48 ESA XMM Newton 48 geocachers 48 Pan STARRS 48 CoRoT satellite 48 X ray observatories 48 N. Rathnasree 48 Astronomical Society 48 unaided eye 48 gravitational microlensing 48 lunar eclipse 48 extrasolar planetary systems 48 Martin Gutoski 48 amateur photographers 48 Earthlike planets 48 Comet McNaught 48 Skywatchers 48 constellations planets 47 astrophotography 47 amateur stargazers 47 Explorer WISE 47 SkyCenter 47 astrophysical phenomena 47 Nasa Kepler 47 lepidopterists 47 Geminid meteor shower 47 infrared telescopes 47 planets orbiting 47 birding enthusiasts 47 comet Lulin 47 ESO telescopes 47 gamma ray observatory 47 Elenin 47 Galilean Nights 47 fainter objects 47 Epsilon Aurigae 47 planetary Transits 47 planets orbiting stars 47 AAVSO 46 planets orbiting sun 46 birder 46 Fermi telescope 46 exoplanetary 46 Comet Machholz 46 Space Telescope 46 Perseid meteors 46 robotic telescopes 46 IYA# 46 MicroFUN 46 Slooh 46 Keck telescopes 46 COROT 46 Moonwatch 46 Observatory telescope 46 exoplanet hunter 46 telescopic observations 46 Galilean satellites 46 Ted Molczan 46 AERONET 46 Omega Centauri 46 Perseid Meteor Shower 46 Sky gazers 46 transiting planets 46 Eta Aquarids 46 Perseids meteor shower 46 exo planets 46 amateur naturalists 46 Kuiper belt objects 46 SOHO spacecraft 46 faint galaxies 46 distant galaxy 46 periodic dimming 45 earthlike planets 45 partial lunar eclipse 45 physicists 45 kite flyers 45 Pasachoff 45 ufologists 45 HARPS instrument 45 ESO VLT 45 X ray observatory 45 OGLE 45 Amateur Astronomy 45 ESA Integral 45 constellations Cygnus 45 Andromeda Galaxy 45 SpaceWeather.com 45 Andromeda XII 45 celestial spectacle 45 NOAO 45 LORRI 45 celestial bodies 45 Quadrantid meteor shower 45 bird watcher 45 PASADENA Calif. Astronomers 45 naturalists 45 Faulkes Telescope 45 aurorae 45 GALEX 45 distant galaxies 45 extrasolar planet 45 moon Charon 45 NASA STEREO 45 supermoon 45 Cassini Huygens spacecraft 45 orbiting observatories 45 Galaxy Evolution 45 Leonid meteor shower 45 distant galaxy clusters 45 Pleiades cluster 45 HiRISE 44 Geminid meteors 44 Lyrids 44 NASA Kepler 44 Earth orbiting satellites 44 Popular Astronomy 44 Saturn rings 44 Astrophysics MOA 44 Planetary Science Institute 44 ESO Very Large Telescope 44 Perseid meteor 44 Hubble Space Telescope 44 KBOs 44 particle physicists 44 Beta Pictoris b 44 Orion Nebula 44 Comet NEAT 44 spaceweather.com 44 extragalactic 44 Keck Observatory 44 MN4 44 stargaze 44 paranormal investigators 44 Comet Hartley 2 44 Nasa spacecraft 44 infrared observatory 44 flyby Cassini 44 Celestron 44 Halley comet 44 Yuri Night 44 CoRoT 44 Lick Observatory 44 noctilucent clouds 44 adaptive optics 44 Observatory astronomer 44 astronomical telescope 44 Dobsonian telescope 44 astrometry 44 Molczan 44 celestial 44 inch Samuel Oschin 44 exoplanet 44 ray Space Telescope 44 Birders 44 Kepler spacecraft 44 astronomical observatories 44 Lulin 44 Astronomer 44 meteor 44 RXTE 44 Astrophysicists 44 Heliospheric Observatory SOHO 44 constellations 44 cachers 44 Earth Asteroid 44 ROSAT 44 astronomical observatory 44 gamma ray telescope 44 Keck Telescope 43 celestial observations 43 gamma ray bursts 43 Ring Nebula 43 Fred Espenak 43 Hubble telescope 43 celestial fireworks 43 Cassini 43 celestial phenomenon 43 HARPS spectrograph 43 Galilean moons 43 StarDate 43 Perseids Meteor Shower 43 Astrophysics 43 ham radio 43 NASA Kepler spacecraft 43 Taurids 43 storm chasers 43 astronomical phenomena 43 nebulas 43 Geminids meteor shower 43 AKARI 43 Evolution Explorer 43 SkyScout 43 auroras 43 gamma ray burst 43 planetary astronomer 43 GROND 43 NASA Cassini 43 ESO Paranal Observatory 43 Mauna Kea Hawaii 43 lunar meteorite 43 inhabitable planets 43 NASA Far Ultraviolet 43 extrasolar planets orbiting 43 Spitzer infrared 43 planetary geologists 43 orbiting observatory 43 exoplanets orbiting 43 ornithologists 43 occultation 43 partial eclipse 43 Cygnus Lyra region 43 occultations 43 Herschel Space 43 Cancri e 43 Solar Dynamics Observatory 43 CoRoT 9b 43 aurora 43 meteor streaking 43 Great Observatories 43 Saturn Cassini 43 Rosetta spacecraft 43 Rathnashree 43 Observatories 43 exoplanets 43 mu Arae 43 orbiting telescopes 43 Keck telescope 43 VIRTIS 43 Samuel Oschin Telescope 43 Fomalhaut b 43 Comet Halley 43 sunlike stars 43 radial velocity 43 SuperWASP 43 Spaceweather.com 43 portable planetarium 43 HARPS spectrograph attached 43 total lunar eclipse 43 orbiting gamma ray 43 meteoroid 43 Pleiades star 43 comets 43 planets orbiting distant 43 distant supernovae 43 Comet #P 43 spacecraft Cassini 43 Hubble Space Telescope HST 42 Perseid meteor showers 42 Kuiper Belt Objects 42 meteorite craters 42 Solar Orbiter 42 CMEs 42 Leonid meteors 42 Kepler Mission 42 Deep Impact flyby spacecraft 42 Amateur Astronomers Association 42 Leonid meteor 42 orbiting Cassini spacecraft 42 Cassini Huygens 42 IceCube 42 exoplanet orbiting 42 twitchers 42 Planck satellite 42 Corot 7b 42 Palomar Observatory 42 rockhounds 42 Telescope Makers 42 distant quasar 42 SOHO comet 42 NASA Chandra 42 Great Orion Nebula 42 meteorites 42 Wolszczan 42 NASA Cassini spacecraft 42 asteroids comets 42 Orbiter LRO 42 TNOs 42 galaxies nebulae 42 Andromeda galaxy 42 VLBA 42 NEOSSat 42 Perseid shower 42 telescopes astronomers 42 planets circling 42 gaseous planet 42 ghost hunters 42 Meteor Showers 42 annual Perseid meteor 42 celestial object 42 Southern Observatory ESO 42 Convection Rotation 42 Reconnaissance Orbiter 42 meteor fireball 42 Keck Interferometer 42 spiral galaxy NGC 42 botanists 42 infrared telescope 42 comet Hale Bopp 42 nightglow 42 raptor migration 42 astrometric 42 comet 42 planet orbiting 42 meteorite 42 hexagonal mirrors 42 magnetars 42 Educators SPACE 42 Aurigid 42 exoplanets planets 42 habitable worlds 42 WorldWide Telescope 42 gravitational lenses 42 Lunar Reconnaissance Orbiter LRO 42 galaxy M# [001] 42 hobbyists 42 ESA Planck 42 optical telescope 42 Kepler Telescope 42 earthshine 42 LOFAR 42 inch refractor telescope 42 OGLE TR #b 42 Subaru Telescope 42 brown dwarfs 42 total solar eclipse 42 Saturnian moon 42 birding 42 Mount Stromlo Observatory 42 Dave Reneke 42 Pleiades 42 Machholz 41 Infrared Array Camera 41 Hubble 41 Christmas Bird Count 41 Jenniskens 41 Perseus Cluster 41 supernovae 41 planets constellations 41 satellites orbiting Earth 41 Venus transits 41 transiting exoplanets 41 DXers 41 orbiting telescope 41 aurora borealis 41 kite fliers 41 naturalist guides 41 occulted 41 brightest supernova 41 Dennis Mammana 41 Hubble Near Infrared 41 habitable planets 41 CloudSat 41 spaceborne 41 asteroid Vesta 41 Taregna 41 constellation Orion 41 scientists 41 star clusters nebulae 41 Helix Nebula 41 planets Uranus 41 Meteor showers 41 Kuiper Belt Object 41 spectroscopic observations 41 cosmological distances 41 eclipsing binaries 41 YU# 41 orbiting spacecraft 41 asteroids orbiting 41 Upsilon Andromedae 41 flyby 41 spiral nebulae 41 Gamma ray Large 41 NASA Infrared Telescope 41 Orionid 41 solar eclipse 41 meteorite hunter 41 Solar TErrestrial RElations Observatory 41 protoplanetary disks 41 lidar 41 avid birders 41 cosmologists 41 Very Large Telescope 41 Cassini flyby 41 Boethin 41 planetarium 41 Observatory 41 Lunar eclipse 41 seismographs 41 ULP cepheids 41 Array ALMA 41 THEMIS 41 submillimetre 41 Gamma ray burst 41 sized planets orbiting 41 Wide Angle Search 41 smallest exoplanet 41 atop Mauna Kea 41 Science Popularisation Association 41 Hubble observations 41 planets 41 ESA Envisat 41 Extrasolar planets 41 HD# [002] 41 Cassini spacecraft 41 orbiting Hubble telescope 41 stellar occultation 41 CALIPSO 41 coronal loops 41 Royal Astronomical Society 41 Jean Luc Margot 41 satellites 41 UKIRT 41 constellation Cygnus 41 cosmic ray 41 Hipparchus 41 Heavens Above 41 birdwatcher 41 called gravitational microlensing 41 HiRISE camera 41 HARPS 41 Clyde Tombaugh 41 Hubble Telescope 41 VORTEX2 41 ringed planet 41 brown dwarf 41 oceanographers 41 Orion constellation 41 submillimeter wavelengths 41 infrared spectrograph 41 Ritchey Chrétien 41 Jodrell Bank Observatory 41 STEREO 41 KH #D 41 THEMIS satellites 41 partial solar eclipse 40 Paranal Chile 40 Leonid Meteor Shower 40 Exoplanets 40 SN #gy 40 galaxies 40 comet McNaught 40 Gemini Observatory 40 fireball streaking 40 NASA Lunar Reconnaissance 40 COROT exo 3b 40 WM Keck Observatory 40 Earthshine 40 Spaceguard 40 TW Hydrae 40 paleontologists 40 FORCAST 40 Astronomical 40 Nehru planetarium 40 Exoplanet 40 slender crescent 40 Siding Spring 40 extrasolar 40 Submillimeter Array 40 Nehru Planetarium 40 Mars Opportunity rover 40 Taurid meteor shower 40 planetary science 40 thermographers 40 Orionid meteor shower 40 pallasite meteorite 40 planetary transits 40 Arches Cluster 40 infrared astronomy 40 solar flares 40 Galileo spacecraft 40 CRISM 40 Gravitational lensing 40 astronomy buff 40 HD#b 40 Space Telescope GLAST 40 orbiting Chandra 40 moons orbiting Saturn 40 storm spotters 40 constellation Taurus 40 X ray telescopes 40 Noctilucent clouds 40 RHESSI 40 Lyrid meteor shower 40 NASA EPOXI mission 40 TRMM satellite 40 Duari 40 faraway galaxies 40 Mars Reconnaissance Orbiter 40 Celestron SkyScout 40 Comet Holmes 40 Galileoscope 40 nebulae 40 Kepler telescope 40 MESSENGER 40 Martian craters 40 moon Ganymede 40 Cepheid variables 40 stellar occultations 40 NASA Fermi Gamma 40 Stargazing 40 NASA Gamma ray 40 Higgs bosons 40 zap boulders 40 NASA Interstellar Boundary 40 Triangulum Galaxy 40 geologists 40 merging galaxies 40 Stardome Observatory 40 gravitational wave 40 Epsilon Eridani 40 HIRES spectrometer 40 Sombrero Galaxy 40 Kitt Peak 40 globular clusters 40 Konacki 40 UVOT 40 astronomical telescopes 40 booklovers 40 STEREO mission 40 auroral displays 40 amateurs 40 SPIRE instrument 40 Hale Bopp 40 observatory telescope 40 LROC 40 Eta Aquarid meteor shower 40 Kepler 40 Voorwerp 40 WISE infrared 40 astronomer Percival Lowell 40 hobbyist photographers 40 highly elliptical orbits 40 WMAP satellite 40 Meteor Shower 40 HAMSAT 40 planemos 40 meteoroids 40 inflatable planetarium 40 asteroid Lutetia 40 asteroids 40 HAMs 40 Canary Telescope 40 Trojan asteroids 40 X ray Telescope XRT 40 Sidewalk Astronomy 40 treasure hunters 40 Explorer GALEX 40 orbiting 40 detect gravitational waves 40 STEREO spacecraft 40 Hubble Space Telescopes 40 Toutatis 40 #x# binoculars [001] 40 VISTA telescope 39 climatologists 39 amateurs alike 39 Arecibo Observatory 39 detect gamma rays 39 transiting planet 39 Kepler #b 39 rockhound 39 thin crescent moon 39 Muchachos Observatory 39 Microlensing Observations 39 SIRTF 39 orbiting Saturn 39 mycologists 39 NASA Wilkinson Microwave 39 musicians 39 Kitt Peak Observatory 39 COROT 7b 39 interstellar dust particles 39 National Astronomical Observatory 39 Gamma ray bursts 39 afterglows 39 cryptozoologists 39 thrilling stargazers 39 distant quasars 39 Geminid shower 39 planetary scientist 39 Saturnian moons 39 GRB #A 39 pyrotechnicians 39 HiRISE camera aboard 39 Comet Hartley 39 Project Ozma 39 PlanetQuest 39 millisecond pulsars 39 flyby spacecraft 39 Mars Reconnaissance Orbiter MRO 39 BLG #Lb 39 AU Mic 39 quasars 39 Ultraviolet Optical Telescope 39 Earthlike 39 Submillimeter 39 fossil hunter 39 Saturnian moon Titan 39 inch Schmidt Cassegrain 39 Mars Color Imager 39 HESS telescopes 39 APXS 39 gravitational lensing 39 ESO 39 Pisgah Astronomical Research 39 moonrise 39 spacecraft flyby 39 http:/saturn.jpl.nasa.gov 39 High Accuracy Radial 39 STScI 39 interacting galaxies 39 constellation Ursa Major 39 Interferometer VLTI 39 annular solar eclipse 39 NEAs 39 WISE telescope 39 Dynamics Observatory 39 spiral galaxy Messier 39 orbiter Mars Odyssey 39 sunspot 39 ultraviolet wavelengths 39 polarimetry 39 Supernova #A 39 Aurora Borealis 39 Delta Cephei 39 Milky Way galaxy 39 Cerro Paranal 39 Ulysses spacecraft 39 Cosmic Evolution 39 Comet Encke 39 TU# [002] 39 Orion nebula 39 orbiting Mars 39 dimming starlight 39 solar corona 39 SDSS II 39 Bioblitz 39 Orion Telescopes 39 Neutron Spectrometer 39 lunar equator 39 moon Io 39 DISR 39 Fermi Telescope 39 Telescope LSST 39 cosmic ray observatory 39 Planetary Society 39 reflector telescope 39 fly tyers 39 Comet Elenin 39 exo planet 39 Near Infrared Camera 39 supersymmetric particles 39 Extrasolar Planet Search 39 LHC experiments 39 meteor streaks 39 Gemini Telescope 39 meteorologists 39 TSN PZ camera 39 Envisat 39 ESA Herschel 39 whiz harmlessly 39 lunar missions 39 eyepiece #/#s f/#.# 39 rocky extrasolar planet 39 globular cluster M# 39 Harlow Shapley 39 sunlike star 39 Steward Observatory 39 Radio Astronomy Observatory 39 outermost planets 39 sunrises 39 Skywarn spotters 39 Perseus constellation 39 SETI @ home 39 Infrared Telescope UKIRT 39 Envisat satellite 39 Mini TES 39 XMM Newton satellite 39 Planetary Institute 39 Spitzer Space Telescopes 39 Spectrograph 39 Observatory Very 39 radiotelescope 39 cosmic cannibal 39 mySKY 39 Nikku Madhusudhan 39 HM Cancri 39 Composite Infrared Spectrometer 39 dust devils 39 GigaPan 39 Planck spacecraft 39 rocketeers 39 Jupiter moon Io 39 planetary atmospheres 39 satellite imagery 39 moon Titan 39 http:/www.nasa.gov/cassini 39 TrES 4 39 Ikonos 39 planets circling stars 39 NASA Mars Reconnaissance 39 BP Psc 39 DEIMOS 39 Mars Odyssey spacecraft 39 LRO 39 Alex Filippenko 39 penumbral lunar eclipse 39 GRBs 39 Solar System 39 Emily Lakdawalla 39 exoplanets planets outside 39 exosolar planets 39 spacecraft orbiting 39 Microlensing 39 INTEGRAL satellite 39 Observatory STEREO 38 Hubble Space 38 Astrosat 38 sun corona 38 meteor sightings 38 LINEAR 38 IBEX spacecraft 38 Cepheids 38 P/# A2 38 Kepler Space Telescope 38 Lunar eclipses 38 BFRO 38 Taurid 38 Saturnian system 38 lunar orbiters 38 Ultraviolet Imaging Spectrograph UVIS 38 e VLBI 38 Subaru telescope 38 Amateur Radio 38 Rosette Nebula 38 rocky planets 38 Saturn Enceladus 38 GRB #B 38 Astrophysicist 38 asteroid Steins 38 gigapixel camera 38 planet Gliese #g 38 star Gliese 38 Area Telescope LAT 38 Geocachers 38 William Bottke 38 GRB # 38 aperture telescope 38 radial velocity technique 38 ESA Rosetta 38 red supergiants 38 robot rovers 38 supergiant stars 38 luminous galaxies 38 NASA Goddard 38 jazz musicians 38 Longway Planetarium 38 X ray wavelengths 38 polarimetric 38 GJ#b 38 trans Neptunian objects 38 interstellar dust 38 mountain bikers 38 Zeta Ophiuchi 38 constellation Cassiopeia 38 geostationary orbits 38 Lagoon Nebula 38 Upsilon Andromedae b 38 Jupiter moons 38 Wilkinson Microwave Anisotropy Probe 38 Charon Pluto 38 UDFy # 38 SPACE.com 38 X ray Observatory 38 NASA Mars Odyssey 38 pulsars 38 Digitized Sky Survey 38 spotting scopes 38 Neptune Uranus 38 SETI 38 Super Earths 38 Giovanni Cassini 38 Enceladus flybys 38 Cosmic Origins Spectrograph COS 38 Astrophysics Cambridge Mass. 38 Spitzer infrared spectrograph 38 Prof Pillinger 38 Milky Way Galaxy 38 Jedicke 38 Sagittarius Window Eclipsing 38 Skywarn 38 SCISAT 38 elliptical galaxy NGC 38 lunar perigee 38 DRAO 38 imaging spectrometer 38 Hinode 38 constellation Cetus 38 Earth asteroids 38 Space Agency 38 Atacama Large Millimeter submillimeter 38 interplanetary spacecraft 38 faint meteors 38 retroreflector 38 JWST 38 Taregana 38 Infrared Mapping Spectrometer VIMS 38 USArray 38 galaxy M# [002] 38 Mars orbiters 38 blazars 38 Starfire Optical Range 38 annular eclipse 38 SNfactory 38 perigee moon 38 HiRISE images 38 Kepler observatory 38 planet Uranus 38 cosmic phenomena 38 Mars landers 38 Planetary Transits 38 spacefaring nations 38 astrobiologists 38 astrophysical objects 38 LCROSS 38 constellation Lacerta 38 Shawal moon 38 HD #b [001] 38 Gliese #e 38 SCP #F# 38 habitable zones 38 terrestrial planets 38 Astrophysical Journal 38 meter Keck telescope 38 refurbished Hubble Space 38 amateur astronomers peering 38 galaxy cluster 38 ghost hunter 38 inch refracting telescope 38 Giovanni Schiaparelli 38 reconnaissance satellites 38 traceurs 38 James Fanson 38 predawn sky 38 Meteor shower 38 Earthlings 38 Spectroscopic Explorer 38 ESA ASI 38 Grammier 38 novas 38 brightnesses 38 Mission TRMM satellite 38 dust enshrouded 38 Multi Object Spectrometer 38 Geminid Meteor Shower 38 ionospheric 38 auroral 38 Gutoski 38 intrinsic brightness 38 NASA Kepler telescope 38 sky gazer 38 primordial galaxies 38 Mercury flyby 38 WFC3 38 Deep Impact comet 38 supernovas 38 coronagraph 38 moons orbiting 38 Japan NAOJ 38 asteroid 38 theoretical physicists 38 MMT Observatory 38 binoculars 38 Chilean Atacama Desert 38 cometary 38 CfA 38 X ray telescope 38 submillimetre wavelengths 38 MG J# +# 38 paranormal investigator 38 Iridium satellites 38 microquasar 38 astrologer Bejan Daruwalla 38 SOAR telescope 38 robotic spacecraft 38 #P/Holmes 38 Herschel Planck 38 Gemini telescopes 38 observing satellites 38 comet flyby 38 twin Voyager spacecraft 38 HD #b [002] 38 Infrared Telescope Facility 38 Corot 9b 38 Mars orbiter 38 Uranus Neptune 38 LCROSS Observation Campaign 38 Alaska Fairbanks Geophysical 38 Keck Telescopes 38 CB Devgun 38 astrophysical 38 Oscillations 38 geomagnetic storms 38 Viking Lander 38 Roque de los 38 Stephan Quintet 38 Landsat satellites 38 Far Ultraviolet Spectroscopic Explorer 38 MEarth 38 Hubble astronomers 38 GJ #b [002] 38 amateur shutterbugs 38 EPOXI spacecraft 38 gamma ray telescopes 38 planets astronomers 38 geophysicists 38 gamma ray flares 38 THEMIS spacecraft 38 Chodas 38 remote sensing satellites 37 inch Alvan 37 Naturalists 37 Heliospheric Observatory 37 planets comets 37 Herschel telescope 37 spectrographic 37 optical interferometry 37 solar eclipses 37 J# +# [002] 37 LIGO 37 Fiske Planetarium 37 Huygens spacecraft 37 XMM Newton observations