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(Click for frequent words.) 70 galaxy NGC 68 starburst galaxy 67 globular cluster 67 eclipsing binary 67 galaxy M# [002] 66 Omega Centauri 65 Orion nebula 65 supermassive 64 red supergiant 64 Triangulum Galaxy 64 lensing galaxy 64 Lagoon Nebula 64 SN #A 64 constellation Taurus 64 AGNs 64 elliptical galaxy 64 X ray binary 64 supernova remnant 63 spiral galaxy 63 Virgo cluster 63 luminous galaxies 63 constellation Sagittarius 63 constellation Scorpius 63 globulars 63 constellation Cassiopeia 63 cluster NGC 63 spiral galaxy NGC 63 interacting galaxies 62 Eagle Nebula 62 galaxy M# [001] 62 Pinwheel Galaxy 62 constellation Hercules 62 emission nebula 62 Dumbbell Nebula 62 distant quasar 62 Ring Nebula 62 giant elliptical galaxies 62 Trifid Nebula 62 constellation Virgo 62 Red Rectangle 62 nebulosity 62 nebula NGC 62 trans Neptunian objects 61 Milky Way halo 61 barred spiral galaxy 61 microquasar 61 Orion Nebula 61 Trifid 61 Fornax cluster 61 Geminga 61 elliptical galaxy NGC 61 Tarantula Nebula 61 ionized hydrogen 61 magnetar 61 Beehive Cluster 61 TrES 4 61 nebular 61 asterism 60 constellation Ursa Major 60 Wolf Rayet stars 60 blue supergiant 60 HD#b 60 Bug Nebula 60 supergiant stars 60 RS Ophiuchi 60 magnetars 60 globular star 60 Coma Cluster 60 Hot Jupiters 60 constellation Coma Berenices 60 Virgo Cluster 60 Orion constellation 60 spiral galaxies 60 GRB #B 60 supergiant star 60 nebula 60 globular cluster M# 60 Epsilon Eridani 60 Doradus 60 foreground galaxy 60 filamentary structures 60 dwarf galaxy 60 proto cluster 60 zodiac constellations 60 galactic disk 60 galaxy cluster 60 Pleiades cluster 60 Beta Pictoris 60 constellation Orion 60 AU Mic 59 planet HD #b 59 stellar nurseries 59 Henize #-# 59 distant quasars 59 Supernova #A 59 planets orbits 59 Zeta Ophiuchi 59 Veil Nebula 59 Kuiper belt objects 59 SN #E 59 extragalactic 59 millisecond pulsar 59 blazars 59 planetary nebulae 59 J# +# [002] 59 active galactic nuclei 59 AB Aurigae 59 HD #b [002] 59 X ray emission 59 Scorpii 59 X ray binaries 59 Rosette Nebula 59 circumstellar disk 59 Delta Cephei 59 Tarantula nebula 59 Cepheid variables 59 Kuiper Belt object 59 KH #D 59 SN #C 59 planet orbits 59 protoplanet 59 planetary nebula 59 blazar 59 zodiacal light 59 Proxima Centauri 59 Horsehead Nebula 58 Andromeda Galaxy 58 constellation Aquila 58 SN#A 58 exoplanet orbiting 58 KBOs 58 Crab Nebula 58 WASP #b 58 merging galaxies 58 Cygni 58 Type Ia supernova 58 HD# [005] 58 giant elliptical galaxy 58 protostars 58 stellar occultation 58 Cat Paw Nebula 58 Voorwerp 58 red supergiants 58 Hanny Voorwerp 58 SMBH 58 supernova remnants 58 globular clusters 58 protoplanetary disk 58 moonlets 58 Small Magellanic Cloud 58 Antennae Galaxies 58 Fomalhaut b 58 active galactic nucleus 58 Triangulum 58 Carina Nebula 58 millisecond pulsars 58 G#.# +#.# 58 VY Canis Majoris 58 photosphere 57 distant galaxy 57 starburst galaxies 57 Coma cluster 57 X ray wavelengths 57 Sombrero Galaxy 57 Wolf Rayet star 57 constellation Andromeda 57 Active Galactic Nuclei 57 luminosities 57 GJ #b [001] 57 PSR J# 57 HD# [002] 57 circumstellar disks 57 elongated orbits 57 transiting planet 57 elliptical galaxies 57 Kuiper Belt objects 57 constellation Pegasus 57 Neutron stars 57 constellation Carina 57 galactic mergers 57 Cepheids 57 Epsilon Aurigae 57 Saturn outermost 57 spiral galaxy M# 57 Fermi telescope 57 quasar 57 gravitationally bound 57 constellation Centaurus 57 intrinsic brightness 57 dynamical evolution 57 Dwarf galaxies 57 Kepler #b 57 XTE J# 57 constellation Aquarius 57 hadron 57 Eta Carinae 57 SN #D 57 moons orbiting 57 PSR J# +# 57 Bullet Cluster 57 constellation Bootes 57 moonlet 56 Trapezium 56 Globular clusters 56 ULIRGs 56 Gliese #e 56 protostar 56 Milky Way Galaxy 56 constellation Ophiuchus 56 CoRoT 7b 56 type Ia supernova 56 interstellar clouds 56 Andromeda galaxy 56 reflection nebula 56 Toutatis 56 BLG #Lb 56 exo planets 56 optical wavelengths 56 filamentary 56 quasars 56 gravitational microlensing 56 constellation Lyra 56 Type Ia 56 spiral galaxy Messier 56 Helix Nebula 56 Syrtis Major 56 star Fomalhaut 56 MG J# +# 56 exoplanetary 56 Upsilon Andromedae 56 CoRoT #b 56 Magnetars 56 Comet Halley 56 NGC #A 56 GRBs 56 Seyfert galaxies 56 GJ #b [002] 56 Bok globules 56 Comet Holmes 56 sunlike stars 56 GRB # 56 noctilucent clouds 56 retrograde orbit 56 occultations 56 Beta Pictoris b 56 RS Oph 56 ellipsoidal 56 Monoceros 56 Camelopardalis 56 faintest galaxies 56 constellation Auriga 56 RMC #a 56 circumstellar 56 planemos 55 interstellar dust clouds 55 gaseous planet 55 prominences 55 constellation Cygnus 55 galactic nuclei 55 Serpens 55 transiting planets 55 XO 3b 55 galactic clusters 55 novae 55 constellation Cetus 55 filamentary structure 55 Maunder minimum 55 protoplanetary disks 55 interstellar cloud 55 #C# [009] 55 Puppis 55 Fomalhaut 55 brightest supernova 55 Caloris 55 jovian 55 Arches Cluster 55 SNR #-#.# 55 rotating neutron stars 55 supergiant 55 galaxy clusters 55 moon Mimas 55 Carinae 55 relativistic jets 55 Methone 55 X ray telescopes 55 X ray observatories 55 Canes Venatici 55 prograde 55 submillimetre 55 PSR B# 55 supernova SN 55 HII regions 55 Eridani 55 Helix nebula 55 constellation Eridanus 55 redshifts 55 Magellanic Clouds 55 distant galaxy clusters 55 electrons orbiting 55 planets orbiting distant 55 faint smudges 55 Kuiper Belt Object 55 silicate dust 55 orbits Saturn 55 ionised gas 55 X ray emitting 55 spiral nebulae 55 protoplanetary 55 rotational axis 55 magnetic excitations 55 ESO PR 55 weak gravitational lensing 55 pulsars 55 exoplanets orbiting 55 proplyds 55 Oort Cloud 55 constellation Leo 55 moon Io 55 infrared spectral 55 metallicity 55 extrasolar planetary systems 55 Pulsars 54 HL Tau 54 XMM Newton 54 Gamma ray bursts 54 dust enshrouded 54 submillimeter 54 ecliptic 54 Milky Way 54 Betelgeuse 54 radial velocity 54 brown dwarf 54 GRB# 54 moons Phobos 54 Pinwheel galaxy 54 T Tauri 54 Antennae galaxies 54 HM Cancri 54 RX J# 54 arcminutes 54 P/# A2 54 microlensing events 54 velocity dispersion 54 comet McNaught 54 constellation Serpens 54 Coma Berenices 54 Saturnian moons 54 icy moons 54 ejecta blanket 54 brown dwarfs 54 Stephan Quintet 54 radial velocity technique 54 relativistic particles 54 planets orbiting sun 54 gravitational lenses 54 afterglows 54 interferometers 54 Andromeda Galaxy M# 54 arcseconds 54 Cancri 54 lobate scarps 54 galaxy NGC# 54 distant supernovae 54 IRAS #-# 54 binary quasar 54 auroral 54 supernova explosion 54 Kuiper Belt Objects 54 accretion disk 54 Galilean moons 54 Type Ia supernovae 54 Quaoar 54 constellation Draco 54 Olympus Mons 54 Butterfly Nebula 54 OGLE TR 54 star Spica 54 HiRISE image 54 nebulae 54 Saturnian moon 54 Martian meteorites 54 GALEX 54 dwarf galaxies 54 Omega Nebula 54 colliding galaxies 53 transiting exoplanets 53 ESO telescope 53 Cosmic Microwave Background 53 galaxies 53 proto planetary disk 53 cosmological distances 53 Pleiades star 53 spheroidal 53 Encke gap 53 VHE gamma rays 53 SMM J# 53 Crab Pulsar 53 star Beta Pictoris 53 arcuate 53 ROSAT 53 X ray pulses 53 dipole moment 53 GQ Lupi 53 Saturn rings 53 coronagraph 53 extrasolar 53 Gliese #g 53 interferometry 53 Spiral galaxies 53 Corot 7b 53 dense clumps 53 planet orbiting 53 Bonneville Crater 53 planet Uranus 53 planetesimal 53 Evolution Explorer 53 tidal tails 53 ESO VLT 53 gamma ray observatory 53 Kuiper belt 53 Reiner Gamma 53 Gondolo 53 inhomogeneities 53 dwarf spheroidal galaxies 53 retrograde orbits 53 observable universe 53 circular orbits 53 toroid 53 Serpens Cauda 53 S/# [001] 53 galactic cores 53 spinning neutron 53 SDSS II 53 Pluto Charon 53 PKS #-# 53 faint galaxies 53 sized planets orbiting 53 cosmic cannibal 53 Lyman alpha 53 supermassive black hole 53 transiting exoplanet 53 ellipsoids 53 Globular Cluster 53 Orion Belt 53 Adam Riess 53 inhabitable planets 53 Cepheid variable 53 star Gliese 53 Hyades cluster 53 supernovae explode 53 microlensing 53 hot Jupiters 53 hypervelocity stars 53 Josephson junction 53 coronal loops 53 reddish orange hue 53 Aurigae 52 spherical halo 52 torus 52 lightwaves 52 type Ia supernovae 52 diffuse aurora 52 constellation Cepheus 52 supernovae 52 redshift z = 52 plutons 52 Comet Machholz 52 RY Sagittarii 52 scanning electron microscopes 52 Saturn outermost ring 52 Trojan asteroids 52 infall 52 submillimetre wavelengths 52 Eridanus 52 HAT P 52 Valles Marineris 52 Lyrae 52 pulsar 52 periodic oscillations 52 Milky Way galaxy 52 moon Enceladus 52 Sedna 52 micrograph 52 particle acceleration 52 Epimetheus 52 ultraviolet wavelengths 52 inner asteroid belt 52 gravitational radiation 52 Hale Bopp 52 Comet Hale Bopp 52 Mpc 52 gravitational lensing 52 RRATs 52 sunlike star 52 BP Psc 52 Oort cloud 52 sparticles 52 ionized gas 52 post perovskite 52 proto galaxies 52 carbonaceous chondrites 52 celestial sphere 52 basaltic rocks 52 exosolar planets 52 chondrites 52 Sagittarius B2 52 baryon 52 TrES 52 supernovas 52 Galilean satellites 52 highly magnetized neutron 52 Cygnus X 52 Arabia Terra 52 redshifted 52 accretion disks 52 mu Arae 52 stellar seismology 52 kpc 52 Quadrantids 52 asteroidal 52 unpolarized 52 #gy 52 galaxies collide 52 solar corona 52 outermost planets 52 HD #b [001] 52 starlike object 52 neutrino particles 52 spherically symmetric 52 chondrules 52 Carina constellation 52 Shackleton crater 52 UDFy # 52 SCP #F# 51 baryon acoustic oscillations 51 constellation Vulpecula 51 Super Earths 51 cosmic phenomena 51 lunar crust 51 micron wavelengths 51 Cancri e 51 ellipse 51 gaseous planets 51 J#.# [001] 51 ejecta 51 spectral measurements 51 precessing 51 galactic bulge 51 moon Ganymede 51 Comet NEAT 51 Martian craters 51 interferogram 51 polar mesospheric clouds 51 gravitational perturbations 51 Tauri Sb 51 circumstellar dust 51 SN #gy 51 hexagonal mirrors 51 protoplanetary disc 51 Tianyulong 51 Mimas 51 energetic electrons 51 chondritic meteorites 51 Pegasi 51 astronomers 51 CoRoT satellite 51 gibbous 51 airglow 51 X ray Observatory 51 SIRTF 51 GRB #A 51 azimuthal 51 axions 51 earthlike planets 51 refractors 51 star Proxima Centauri 51 CMB radiation 51 V# Puppis 51 Comet Tempel Tuttle 51 magnetic monopoles 51 X ray afterglow 51 sundog 51 Kuiper belt object 51 comets orbiting 51 Earthlike planets 51 Orionis 51 hypervelocity star 51 planet TrES 51 Cepheus 51 Large Magellanic Cloud 51 Io Europa 51 volcanic moon Io 51 Fornax 51 elliptical orbits 51 VTEM conductor 51 OGLE TR #b 51 eccentric orbits 51 Caloris Basin 51 polar vortex 51 neutralinos 51 astrophysical phenomena 51 galactic halo 51 silicon monoxide 51 fainter objects 51 Phoebe orbits 51 gamma ray bursts 51 gravitational interactions 51 supernova 51 fluorescent nanoparticles 51 Cygnus Lyra region 51 BP Piscium 51 GJ#b 51 neutron stars 51 X ray observatory 51 planets asteroids 51 Hubble observations 51 gravitationally lensed 51 HIP #b 51 photomultiplier tubes 51 baryonic 51 lapilli 51 gamma ray burst 51 Comet Elenin 51 distant galaxies 51 Epsilon Indi 51 Great Orion Nebula 51 faint smudge 51 S/# P2 51 constellation Libra 51 Galaxy Evolution 51 southern constellation Carina 51 Viking orbiters 51 weakly interacting 51 neutron star 51 extrasolar planet 51 Corona Borealis 51 constellation Fornax 51 crystalline silicates 51 Keck Interferometer 51 planetary transits 51 redshift 51 spectra 51 spacecraft flyby 51 supersymmetric particles 51 chromosphere 51 planetary nebulas 51 exosphere 51 quasicrystal 51 cosmic strings 51 Peony nebula star 51 zodiacal dust 50 V# Mon 50 coronal loop 50 Jupiter magnetosphere 50 galaxy 50 emit X rays 50 magnetotail 50 VB #b 50 rayed crater 50 supernova explosions 50 Linhenykus 50 planet Gliese #c 50 antiparallel 50 waxing crescent moon 50 gamma ray radiation 50 planets Uranus 50 Orcus Patera 50 planet WASP #b 50 Comet Lulin 50 spectroscope 50 asteroseismology 50 astrophysical objects 50 extrasolar planets 50 Brillouin zone 50 infrared wavelengths 50 GeV 50 constellation Canes Venatici 50 Higgs bosons 50 XMM Newton satellite 50 mica schist 50 reionization 50 Jupiter moon Io 50 Galactic Plane 50 Rydberg atom 50 Pluto Eris 50 Type 1a supernovae 50 diffraction patterns 50 UV wavelengths 50 galaxy formation 50 Canis Major 50 x ray scattering 50 Bosons 50 Arsia Mons 50 Grillmair 50 infrared astronomy 50 Circinus X 1 50 HARPS instrument 50 glows brightly 50 Hellas Basin 50 BLG #L 50 frequency combs 50 cometary material 50 eclipsing binaries 50 Saturn auroral 50 exo planet 50 topologically 50 Ursa Minor 50 sun corona 50 Ophiuchi 50 tonalite 50 gamma ray telescopes 50 optical telescopes 50 Spectroscopic 50 TW Hydrae 50 infrared wavelength 50 Saturn innermost 50 Saturn Cassini 50 SNfactory 50 Giovanni Cassini 50 ultraviolet wavelength 50 fluorescent dye molecules 50 linearly polarized 50 Gliese #c 50 Spitzer infrared 50 constellation Ara 50 kaons 50 solar prominences 50 Deneb 50 ellipsoid 50 ARPES 50 magnetic monopole 50 silicate mantle 50 gamma ray emission 50 infrared imager 50 Schematic diagram 50 interferometric observations 50 starlike 50 masers 50 dense neutron stars 50 smallest extrasolar planet 50 blue straggler 50 Ceti 50 RXTE 50 gravitationally 50 Optical Gravitational Lensing Experiment 50 CAIs 50 Planitia 50 SUSY 50 magnetospheric 50 Hubble Ultra 50 maser emission 50 synthetic aperture 50 moon Iapetus 50 z ~ 50 nucleosynthesis 50 particle colliders 50 Noctilucent clouds 50 calderas 50 Candor Chasma 50 chemical abundances 50 Hipparcos 50 Figure 4a 50 Komossa 50 CoRoT 9b 50 Corot 9b 50 exoplanet 50 CLG J# # 50 Gemini constellation 50 collinear 49 optical spectra 49 UCO Lick 49 Very Large Array 49 Albireo 49 Hyades 49 PSR B# +# 49 constellation Monoceros 49 Encke Gap 49 stellar occultations 49 spatially resolved 49 solitons 49 aperture telescope 49 Photonic crystals 49 astrometry 49 protoplanetary discs 49 Gravitational waves 49 Mott insulator 49 nanorod 49 ultrabright 49 spectroscopically 49 lunar equator 49 periodicities 49 aeromagnetic anomaly 49 bolometer 49 planet HD#b 49 R Coronae Borealis 49 outermost ring 49 planets orbiting 49 neutralino 49 smallest exoplanet 49 coronal holes 49 spectroscopic observations 49 planets circling 49 constellation Hydra 49 coarse pyrite 49 polarimetry 49 Fourier transform infrared 49 optical interferometry 49 Supermassive black 49 Cassiopeia 49 gravitational redshift 49 shorter wavelengths 49 astronomical objects 49 terrestrial planets 49 Comet Hartley 2 49 magnetic polarity 49 Saturnian system 49 occulted 49 exoplanets 49 superstrings 49 Mercury magnetosphere 49 infalling 49 constellation Aries 49 gamma ray flares 49 YORP effect 49 WMAP satellite 49 backscattered 49 LOFAR 49 absorption spectra 49 strange quark 49 diffraction pattern 49 quantum particle 49 radial velocity method 49 carbonaceous meteorites 49 conic 49 solar radii 49 gravitational wave 49 elliptical shapes 49 extrasolar planet HD #b 49 mantle plumes 49 inhomogeneous 49 SMBHs 49 equilateral triangles 49 sunspot 49 Charon Pluto 49 galactic nucleus 49 meteoritic material 49 constellation Canis Major 49 Cephei 49 Arcturus 49 planet Gliese #g 49 Gravitational lensing 49 infrared spectra 49 nucleon 49 SNe Ia 49 retroreflector 49 Pavonis Mons 49 tetrahedron 49 magnetic flux 49 Supernova Cosmology Project 49 Astrophysicists 49 Orionids 49 planetary Transits 49 supermassive black holes 49 Fig. 3A 49 constellation Perseus 49 sodium atoms 49 IRC +# 49 Perseus Cluster 49 Upsilon Andromedae b 49 brightnesses 49 ionized gases 49 Eta Carina 49 Alexey Vikhlinin 49 earthshine 49 superdense neutron star 49 cosmic microwave radiation 49 La Silla observatory 49 Elenin 49 lunar highlands 49 millimeter wavelengths 49 biosignatures 49 interstellar dust grains 49 celestial object 49 Hawking radiation 49 HUDF 49 grabens 49 Iapetus 49 subatomic particle 49 rotating neutron 49 primitive meteorites 49 distant supernovas 49 photoemission 49 tiger stripes 49 spectral characteristics 49 photometer 49 lunar maria 49 gravitational lens 49 synchrotrons 49 soliton 49 planets moons 49 W boson 49 intracluster 49 Explorer WISE 48 Nectocaris 48 collimated 48 planet transits 48 ENAs 48 IR wavelengths 48 planetary orbits 48 Precession 48 J# [002] 48 fluorophores 48 interstellar dust particles 48 neutron scattering experiments 48 2MASS 48 gamma ray photons 48 planetary magnetospheres 48 Makemake 48 submillimeter galaxies 48 Supernovae 48 Exoplanets 48 dwarf spheroidal 48 constellations Cygnus 48 orbits 48 hypernova 48 extrasolar planets orbiting 48 particle detectors 48 indium arsenide 48 stratovolcano 48 gamma ray telescope 48 constellation Pisces 48 HiRISE camera aboard 48 Kepler 9c 48 WIMPs 48 Circinus 48 Ultraviolet Imaging Spectrograph UVIS 48 crustal thickness 48 IRAS 4B 48 yardangs 48 COROT 7b 48 Higgs particle 48 muon 48 trimers 48 Gamma ray burst 48 COROT exo 3b 48 ultradense 48 Halton Arp 48 Astrophysical 48 branes 48 Pleiades 48 filaments 48 interstellar magnetic 48 Magellanic Stream 48 lunar meteorites 48 lunar craters 48 telescope eyepiece 48 double helix nebula 48 #x magnification [002] 48 remanent 48 Type Ic supernova 48 Mizar 48 TNOs 48 spinning pulsar 48 submillimeter wavelengths 48 Nebula 48 Earthlike 48 Jovian moons 48 elliptical shaped 48 infrared interferometry 48 Infrared Astronomical Satellite IRAS 48 Wolfgang Brandner 48 Raman spectra 48 CoRoT 48 Mars Phobos 48 relativistic protons 48 impactors 48 constellation Puppis 48 constellation Gemini 48 rotational symmetry 48 photoelectron 48 spherical particles 48 valence electron 48 hydrated electron 48 starburst 48 vortices 48 photometry 48 VLTI 48 Virginis 48 binary asteroid 48 ULP cepheids 48 Michelson interferometer 48 Ritchey Chretien 48 Mini TES 48 Perseus constellation 48 superluminal 48 isosceles triangle 48 adatoms 48 Mössbauer 48 protoplanets