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(Click for frequent words.) 67 galactic disk 66 accretion disks 66 elongated orbits 65 Arches Cluster 65 galactic bulge 64 gravity warps 64 interstellar cloud 64 Neutron stars 64 Bug Nebula 64 circumstellar disk 64 lensing galaxy 63 Wolf Rayet star 63 circumstellar disks 63 reflection nebula 63 Pleiades cluster 63 emission nebula 63 galaxy M# [001] 63 photosphere 63 Orion constellation 62 Sagittarius dwarf galaxy 62 HM Cancri 62 Upsilon Andromedae 62 highly magnetized neutron 62 GJ#b 62 planet WASP #b 62 exoplanets orbiting 62 Sagittarius B2 62 retrograde orbit 62 constellation Andromeda 62 active galactic nucleus 62 zodiacal dust 62 eclipsing binary 62 cosmological distances 62 accretion disk 62 comet Tempel Tuttle 62 nebula NGC 61 emit X rays 61 celestial sphere 61 constellation Aquarius 61 sized planets orbiting 61 planets orbits 61 eccentric orbits 61 interstellar dust 61 blue supergiant 61 X ray emission 61 planetary nebulae 61 silicon monoxide 61 periodic dimming 61 silicate dust 61 Bok globules 61 Milky Way halo 61 HARPS instrument 61 CoRoT #b 61 protoplanetary disk 61 constellation Carina 61 circumstellar 60 sunlike star 60 gravitationally bound 60 Saturn outermost 60 cluster NGC 60 Fomalhaut b 60 Omega Centauri 60 Trapezium 60 AB Aurigae 60 R Coronae Borealis 60 relativistic particles 60 zodiacal light 60 red supergiants 60 AGNs 60 Andromeda galaxy 60 Orion nebula 60 galactic cores 60 energetic electrons 60 galaxy M# [002] 60 protostar 60 occultations 60 infalling 60 moons orbiting 60 exosphere 60 Oort Cloud 60 Epsilon Aurigae 60 merging galaxies 60 galactic halo 59 dense clumps 59 Upsilon Andromedae b 59 elliptical galaxy 59 Triangulum 59 Beta Pictoris 59 volcanic moon Io 59 luminous galaxies 59 moon Mimas 59 X ray wavelengths 59 retrograde orbits 59 planetary embryos 59 exoplanet orbiting 59 Epsilon Eridani 59 Fermi telescope 59 planet HD #b 59 millisecond pulsar 59 gaseous planets 59 AU Mic 59 extrasolar 59 gravitationally 59 gravitational interaction 59 NGC #A 59 spinning neutron 59 HD# [002] 59 moon Io 59 comets orbiting 59 transiting exoplanet 59 exo planets 59 galaxy NGC 59 galaxies collide 59 foreground galaxy 59 V# Mon 59 filamentary structure 59 planets orbiting distant 59 Stephan Quintet 59 Lagoon Nebula 59 active galactic nuclei 59 HD#b 59 constellation Ophiuchus 59 gravitational interactions 59 red supergiant 59 X ray binary 59 gaseous planet 59 Rosette Nebula 59 Coma Cluster 59 Galilean moons 59 Pleiades star 58 cometary debris 58 constellation Cassiopeia 58 supergiant star 58 Saturn magnetosphere 58 HL Tau 58 Oort cloud 58 magnetars 58 IRAS #-# 58 SN #A 58 interstellar medium 58 jovian 58 moon Ganymede 58 Gravitational waves 58 Perseus Cluster 58 stellar nurseries 58 CMB photons 58 protoplanetary disc 58 GJ #b [001] 58 fainter objects 58 Virgo Cluster 58 dwarf spheroidal galaxies 58 X ray binaries 58 Uranus Jupiter 58 Syrtis Major 58 constellation Hercules 58 intrinsic brightness 58 nebulosity 58 Ring Nebula 58 TrES 4 58 sunlike stars 58 waxing gibbous moon 58 galactic clusters 58 Zeta Ophiuchi 58 planets orbiting sun 58 inhabitable planets 58 runaway thermonuclear 58 SN#A 58 Samuel Oschin Telescope 58 Jupiter moon Io 58 Tarantula nebula 58 Tauri Sb 58 moons circling 58 Hot Jupiters 58 assumed planets circling 58 waning crescent moon 58 BLG #Lb 58 filamentary 58 interstellar clouds 57 interacting galaxies 57 extrasolar planets orbiting 57 rotational axis 57 constellation Auriga 57 planet orbits 57 galactic cosmic rays 57 moonlet 57 earthlike planets 57 exoplanetary 57 proto planetary disks 57 baryon 57 Saturn outermost ring 57 glows brightly 57 globular star 57 giant elliptical galaxies 57 constellation Centaurus 57 Trifid Nebula 57 protostars 57 smallest exoplanet 57 galaxy NGC# 57 Geminga 57 KH #D 57 planetary nebula 57 planets comets 57 protoplanetary 57 exoplanets planets 57 supernova explosions 57 Mars Neptune Uranus 57 Gamma ray bursts 57 Cosmic Microwave Background 57 moonlets 57 constellation Scorpius 57 double helix nebula 57 chromosphere 57 Valles Marineris 57 Eta Carinae 57 planetary nebulas 57 occulted 57 Globular clusters 57 RS Ophiuchi 57 Kuiper belt 57 spiral galaxy NGC 57 nebular 57 MG J# +# 57 elliptical orbits 57 waxing crescent moon 57 supernova explosion 57 baryonic matter 57 trans Neptunian objects 57 redshifted 57 zodiac constellations 57 beautifully retro styled 57 starburst galaxy 57 haloes 57 Comet Holmes 57 WASP #b 57 Comet LINEAR 57 hydrocarbon haze 57 Geminid meteors 57 Saturn Jupiter Uranus 57 sundog 57 icy comets 57 SN #C 57 infalling gas 57 X ray afterglow 56 strange quark 56 tidal tails 56 particles WIMPs 56 Venus Neptune Uranus 56 Tarantula Nebula 56 Gliese #c 56 Cygnus Lyra region 56 constellation Virgo 56 X ray pulses 56 moons Io 56 proto galaxies 56 thin crescent moon 56 helium nuclei 56 cosmic cannibal 56 Corot 9b 56 Comet Tempel Tuttle 56 VY Canis Majoris 56 Fornax cluster 56 Gemini constellation 56 Type 1a supernovae 56 dust enshrouded 56 axions 56 protoplanetary disks 56 GJ #b [002] 56 Quadrantid meteor shower 56 Io volcanoes 56 Supernova #A 56 magnetar 56 ionized hydrogen 56 aurorae 56 silicate mantle 56 waning gibbous moon 56 icy moons 56 IRC +# 56 Earth magnetosphere 56 galaxy cluster 56 Orionid meteors 56 Quentin Tarantino Waltz 56 Corot 7b 56 neutralinos 56 starburst galaxies 56 relativistic protons 56 ionized gas 56 constellation Lyra 56 brightest meteors 56 brightest supernova 56 Chi Cygni 56 Virgo cluster 56 Quadrantids 56 Jovian moons 56 Delta Cephei 56 giant elliptical galaxy 56 SMBH 56 microquasar 56 globular cluster M# 56 Alfven waves 56 Coma cluster 56 type Ia supernova 56 SMM J# 56 constellation Perseus 56 transiting planet 56 Circinus X 1 56 Gliese #G 56 Earthlike planets 56 observable universe 56 gamma ray emitting 56 COROT exo 3b 56 dwarf galaxy 56 CMB radiation 56 ionized gases 56 Hanny Voorwerp 55 faint smudge 55 gravitational tug 55 Kuiper Belt objects 55 protoplanetary discs 55 gravitational lens 55 KBOs 55 spacecraft flyby 55 interstellar dust clouds 55 Neptune Uranus 55 magnetospheric 55 gravitational microlensing 55 Kuiper belt objects 55 ionized particles 55 SN #gy 55 star Spica 55 Gliese #e 55 afterglows 55 Jupiter Ganymede 55 gravitational tides 55 distant galaxy 55 constellations Cygnus 55 spiral nebulae 55 Cat Paw Nebula 55 rocky planets 55 nebulae 55 outer corona 55 mu Arae 55 Saturnian moon 55 constellation Ursa Major 55 occultation 55 planet Nibiru 55 Gravitational lensing 55 gibbous 55 Supernovae 55 Extrasolar planets 55 Veil Nebula 55 Spiral galaxies 55 microlensing events 55 heliopause 55 globulars 55 smoggy atmosphere 55 constellation Taurus 55 comets asteroids 55 magnetosphere 55 Candor Chasma 55 absorbs photons 55 elliptical galaxy NGC 55 rotating neutron 55 Mars Uranus 55 slender crescent 55 umbral shadow 55 HIP #b 55 crescent Moon 55 GQ Lupi 55 Kepler 9c 55 infall 55 moon Phobos 55 celestial equator 55 gravitational tugs 55 Red Rectangle 55 planetary orbits 55 XTE J# 55 oppositely directed 55 helium atoms 55 ultraviolet wavelengths 55 ejecta blanket 55 comet Hale Bopp 55 solar prominences 55 supernovae explosions 55 inner Oort Cloud 55 supermassive 55 cosmic microwave background 55 rotating neutron stars 55 star Proxima Centauri 55 planets Uranus 55 sunspot cluster 55 Magellanic Clouds 55 planemos 55 spheroidal 55 Toutatis 55 Beehive Cluster 55 Bullet Cluster 55 Io Europa 55 equatorial bulge 54 elliptical galaxies 54 planetary transits 54 GRB# 54 galactic mergers 54 Wolf Rayet stars 54 coronal holes 54 globular cluster 54 distant quasar 54 planetesimals 54 protoplanet 54 Kuiper Belt object 54 inner asteroid belt 54 magnetic monopoles 54 ejecta 54 Carina Nebula 54 permanently shadowed craters 54 exosolar planets 54 carbonate minerals 54 Neptune Uranus Jupiter 54 planet Uranus 54 relativistic jets 54 constellation Sagittarius 54 RRATs 54 umbral 54 Henize #-# 54 supersymmetric particles 54 Tempel Tuttle 54 Type Ia supernova 54 X ray emitting 54 dwarf galaxies 54 Carina constellation 54 proto cluster 54 Jupiter Uranus 54 blue straggler 54 Meteor showers 54 waning crescent Moon 54 BP Psc 54 Antennae Galaxies 54 filamentary structures 54 star Beta Pictoris 54 supergiant stars 54 VHE gamma rays 54 planets orbiting stars 54 supernovae explode 54 Capricornus 54 Galactic cosmic rays 54 ESO PR 54 ionised gas 54 superdense neutron star 54 Cancri 54 ringed planet 54 telescope eyepiece 54 Galilean satellites 54 tidally locked 54 massless particles 54 circular orbits 54 moon Enceladus 54 galaxy 54 HiRISE image 54 novas 54 lunar crust 54 airglow 54 Palaeozoic sedimentary 54 Crab Pulsar 54 interstellar distances 54 massive sulphide horizons 54 asteroidal 54 moon Deimos 54 distant quasars 54 outermost planets 54 luminosities 54 planet transits 54 TrES 54 millisecond pulsars 54 barred spiral galaxy 54 solar nebula 54 sodium atoms 54 hypervelocity stars 54 comet tail 54 RY Sagittarii 54 Jupiter magnetosphere 54 Milky Way Galaxy 54 metallicity 54 V# Sgr 54 accreting 54 Small Magellanic Cloud 54 Solar TErrestrial RElations Observatory 54 Venus Uranus 54 thrilling stargazers 54 asterism 54 subsurface ocean 54 Eagle Nebula 54 Helix Nebula 54 shorter wavelengths 54 planets asteroids 54 radiative cooling 54 blackholes 54 neutralino 54 cosmic magnifying glass 54 Beta Pictoris b 54 planets moons 54 planets circling stars 54 Keck Interferometer 54 Weakly Interacting Massive Particles 54 gravitational attraction 54 mysterious uncharted 54 coronal mass ejections CMEs 54 baryonic 54 diffract 54 habitable zones 54 stellar occultation 54 SNR #-#.# 54 extrasolar worlds 53 arcminutes 53 Konacki 53 Cepheids 53 comet nucleus 53 innermost planet 53 Saturnian system 53 constellation Leo 53 supernova SN 53 fingerlike projections 53 Kuiper Belt Objects 53 lightwaves 53 planet orbiting 53 galactic equator 53 constellation Orion 53 prominences 53 brownish haze 53 SGR J# 53 gamma ray observatory 53 planet magnetosphere 53 mesosphere 53 exo planet 53 gamma ray emission 53 constellation Vulpecula 53 spiral galaxies 53 star Gliese 53 constellation Aries 53 polar vortex 53 Jupiter Saturn 53 globular clusters 53 magnetotail 53 Helix nebula 53 olivine mineral 53 thermonuclear reactions 53 Jovian moon 53 Orcus Patera 53 penumbral shadow 53 faint galaxies 53 Astrological lore 53 infrared photons 53 Cosmic rays 53 electron orbits 53 polar stratospheric 53 ESA XMM Newton 53 Earth magnetotail 53 COROT 7b 53 Comet Halley 53 G#.# +#.# 53 starquakes 53 Magnetic reconnection 53 dwarf spheroidal 53 asteroids comets 53 planet Gliese #g 53 visible wavelengths 53 earthshine 53 galaxies 53 comet Lulin 53 volcanic lava flows 53 gravitational perturbations 53 discover Fomalhaut 53 planet gravitational tug 53 Saturn moon Mimas 53 spinning neutron stars 53 Infrared Thermal Imaging Spectrometer 53 ecliptic 53 constellation Gemini 53 optical wavelengths 53 magnetopause 53 lunar craters 53 coronal loops 53 tidal bulge 53 Cassini spacecraft orbiting 53 BP Piscium 53 constellation Pegasus 53 interstellar particles 53 nucleosynthesis 53 PKS #-# 53 Perseid shower 53 Neptune Jupiter 53 Swift Tuttle 53 Kuiper Belt Object 53 polar craters 53 wrinkle ridges 53 HIRES spectrometer 53 gibbous moon 53 TNOs 53 gaseous envelope 53 unpolarized 53 hot Jupiters 53 prograde 53 galaxy redshift 53 crystalline silicates 53 protoplanets 53 Jupiter Saturn Uranus 53 tidally 53 moon Mab 53 intracluster 53 circumstellar dust 53 electrons positrons 53 Planetary nebulae 53 energetic gamma rays 53 Kepler #b 53 slender crescent moon 52 Comet Hartley 2 52 NGC# 52 baryons 52 zodiacal constellations 52 chondrules 52 starlike 52 heliosheath 52 Epimetheus 52 Pluto Eris 52 Trifid 52 GRB # 52 ENAs 52 #P/Churyumov-Gerasimenko 52 RXTE 52 diffuse aurora 52 Serpens Cauda 52 Uranus Neptune 52 Higgs bosons 52 quantum particle 52 Comet Elenin 52 infrared wavelengths 52 icy moon Enceladus 52 nebulas 52 Hyades cluster 52 GRB #B 52 Crab Nebula 52 OGLE TR #b 52 Mars Jupiter Uranus 52 Earth radii 52 extragalactic 52 backscattered 52 Herbig Ae Be 52 Butterfly Nebula 52 transiting planets 52 orbiting planets 52 van Arkel discovery 52 emits X rays 52 constellation Coma Berenices 52 Proxima Centauri 52 heliosphere 52 IR wavelengths 52 GRBs 52 Phoebe orbits 52 constellation Draco 52 Martian dust 52 electromagnetic flux 52 Triangulum Galaxy 52 submillimeter galaxies 52 astrophysical objects 52 WIMPs 52 CoRoT 7b 52 extrasolar planet HD #b 52 Io Europa Ganymede 52 moons Phobos 52 Magnetars 52 Milky Way galaxy 52 spherically symmetric 52 retroreflector 52 stellar occultations 52 Orionid meteor shower 52 distant supernovae 52 Earthlike planet 52 Mercury magnetosphere 52 Galileo spacecraft 52 Hawking radiation 52 gravitational radiation 52 galaxy clusters 52 constellation Cetus 52 Exoplanets 52 floating orbs 52 VLTI 52 Dwarf galaxies 52 Perseus constellation 52 distant suns 52 coronal loop 52 tau neutrinos 52 ultraviolet imaging spectrograph 52 Type Ia supernovas 52 subatomic scale 52 singularities 52 glow brightly 52 sterile neutrinos 52 stellar seismology 52 Saturn Enceladus 52 Great Orion Nebula 52 PSR J# 52 proplyds 52 magnetospheres 52 fading afterglow 52 Type Ia supernovae 52 Venusian atmosphere 52 antiparticle 52 J# +# [002] 52 Caloris Basin 52 galactic magnetic 52 quantum particles 52 Doppler shifts 52 Asteroid Belt 52 highly elliptical orbit 52 largest moon Charon 52 highly collimated 52 Hubble orbits 52 hydrated minerals 52 X ray observatories 52 plasmasphere 52 silicate grains 52 galactic alignment 52 star Fomalhaut 52 X ray telescopes 52 HD #b [001] 52 Ringed Planet 52 electron neutrinos 52 weakly interacting 52 CoRoT 9b 52 Mandushev 52 dust mote 52 Comet Machholz 52 nebula 52 Earthlike 52 radial velocity method 52 Dhanu Rashi 52 constellation Cygnus 52 Mercury Uranus 52 Comet Hale Bopp 52 Lyrid meteor shower 52 magnetic dynamo 52 cometary dust 52 Cancri e 52 Surface Composition Spectrometer 52 submillimetre wavelengths 52 Eridanus 52 distant galaxy clusters 52 XO 3b 52 Cepheid variables 52 Distant galaxies 52 radial velocity 52 dust devils 52 glowed eerily 52 gamma rays emitted 52 Horsehead Nebula 52 electrons orbiting 52 dusty disks 52 comet orbit 51 unaided eye 51 planetary Transits 51 Arsia Mons 51 hypernova 51 spacetime 51 muon neutrinos 51 blazars 51 smallest extrasolar planet 51 moonless sky 51 water vapor condenses 51 constellation Eridanus 51 Partial lunar eclipse 51 meteoroids 51 P/# A2 51 silicate rocks 51 Voorwerp 51 evanescent waves 51 Milky Way 51 orbits Saturn 51 submillimeter wavelengths 51 Gliese #g 51 comet McNaught 51 faintest galaxies 51 mineral olivine 51 Earthly contamination 51 Perseid meteors 51 gravitational instabilities 51 Charon Pluto 51 constellation Serpens 51 wispy cirrus clouds 51 Eta Aquarid meteor shower 51 funk steams 51 interstellar dust particles 51 x ray beam 51 tholins 51 Aram Chaos 51 galaxy supermassive black 51 carbonaceous chondrites 51 interstellar dust grains 51 solar corona 51 Elenin 51 thin wispy clouds 51 XMM Newton 51 torus 51 elongated orbit 51 superdense 51 Great Conveyor Belt 51 Earth asteroids NEAs 51 celestial phenomena 51 toroid 51 supernova remnants 51 Orionids 51 Betelgeuse 51 heliosphere shields 51 UDFy # 51 orbits 51 type Ia supernovae 51 umbra 51 Kuiper belt object 51 CoRoT satellite 51 Jupiter moons 51 martian rocks 51 Perseus cluster 51 Ulysses spacecraft 51 thunderstorms loomed 51 Mars Uranus Neptune 51 Venus Jupiter Uranus 51 SMBHs 51 SN #D 51 Giovanni Cassini 51 headwall glistening white 51 infinite expanse 51 Comet NEAT 51 GZK cutoff 51 cumulonimbus 51 arcseconds 51 auroral displays 51 Mpc 51 Spitzer infrared spectrograph 51 Heliospheric Observatory SOHO 51 missing baryons 51 Churyumov Gerasimenko 51 prolific Key Tuffite 51 stratus clouds 51 supermassive stars 51 Polycyclic aromatic hydrocarbons 51 particle detectors 51 twin suns 51 spherical shell 51 cumulus cloud 51 Muchachos Observatory 51 radial velocity technique 51 permanently shadowed regions 51 starlike object 51 supernova remnant 51 felsic tuff 51 planets 51 albedo reflectivity 51 Gamma ray burst 51 IBEX spacecraft 51 SOHO spacecraft 51 cometary material 51 Earths orbiting 51 tinder dry Nicklin 51 BLG #L 51 ESO VLT 51 Spitzer infrared 51 ferric oxides 51 Saturnian moons 51 ultradense 51 Wolszczan 51 meteoritic material 51 eclipsing binaries 51 planets orbiting 51 Peony nebula star 51 Doradus 51 noctilucent clouds 51 extraterrestrial UFOs 51 called gravitational microlensing 51 faraway galaxy 51 Planck telescope 51 Comet Lulin 51 Methone 51 polar latitudes 51 tropopause 51 Gamma rays 51 colloidal crystals 51 superluminal 51 celestial object 51 potassium atoms 51 refractors 51 brane 51 terrestrial planets 51 PSR J# +# 51 Alexey Vikhlinin 51 Trojan asteroids 51 Hellas Basin 51 protons neutrons 51 Dumbbell Nebula 51 spectroscopically 50 microlensing 50 waning crescent 50 Lyman alpha 50 molten magma 50 photometry 50 magnetic polarity 50 corona 50 infrared wavelength 50 galactic nuclei 50 Perseids meteor shower 50 gravitational pulls 50 dusty cocoons 50 helium atom 50 gamma ray radiation 50 Andromeda Galaxy M# 50 constellation Bootes 50 Avishay Gal Yam 50 antimatter particles 50 ecliptic plane 50 golden orb 50 dynamical evolution 50 constellation Libra 50 RX J# 50 Tunguska Siberia 50 planet HD#b 50 gravitational lensing 50 quantum mechanically 50 quantum superposition 50 constellation Puppis 50 Gondolo 50 reionization 50 phyllosilicates 50 Adam Riess 50 Tycho supernova remnant 50 waxing crescent 50 exerts gravitational pull 50 highly elliptical orbits 50 optical telescopes 50 helium ions 50 predawn sky 50 SINFONI 50 Hubble observations 50 Evolution Explorer 50 GALEX 50 volcano Olympus Mons 50 advection 50 bedrock outcropping 50 shadowed craters 50 fissure eruption 50 diffraction pattern 50 aerosol particles 50 Cygnus X 50 Descent Imager Spectral Radiometer 50 ultracold gas 50 muon neutrino 50 Deep Impact craft 50 heavily cratered 50 inky sky 50 amateur astronomers peering 50 Orion Nebula 50 Noctilucent clouds 50 faint wisps 50 reddish glow 50 impactors 50 linearly polarized light 50 penumbral 50 ray Space Telescope 50 Circinus 50 cosmic phenomena 50 outermost ring 50 coronal mass ejection 50 polarimetry 50 Andromeda Galaxy 50 Type 1a supernova 50 PSR B# 50 brown dwarfs 50 CLG J# # 50 meteor craters 50 Saturn rings 50 ionized molecules 50 Solar flares 50 infrared telescopes 50 spherical particles 50 Monoceros 50 magma boiling 50 faraway galaxies 50 proto planetary disk 50 transiting exoplanets 50 Tharsis Rise 50 MESSENGER spacecraft 50 spiral galaxy Messier 50 silicates 50 galaxies nebulae 50 ionise 50 astronomer Clyde Tombaugh 50 Lyrids 50 exciton 50 astronomical objects 50 multiband imaging photometer 50 colliding galaxies 50 wavelength infrared 50 Dust devils 50 Olympus Mons