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(Click for frequent words.) 68 protoplanetary disks 68 Kuiper Belt Objects 66 icy moons 66 Kuiper belt objects 66 supergiant star 66 AGNs 66 coronal loops 66 protostars 66 nebular 66 eclipsing binary 65 sunlike stars 65 protoplanet 65 planetary nebula 65 supernova remnants 65 accretion disks 65 supergiant stars 64 proto planetary disks 64 moons orbiting 64 circumstellar 64 Eagle Nebula 64 planetary nebulae 64 planetary nebulas 64 Upsilon Andromedae 64 active galactic nuclei 64 Gravitational waves 64 reflection nebula 64 red supergiant 64 nebula 63 interstellar cloud 63 Bug Nebula 63 merging galaxies 63 Red Rectangle 63 GJ #b [002] 63 lunar crust 63 interstellar clouds 63 SN #A 63 red supergiants 63 filamentary structure 63 nebulae 63 Veil Nebula 63 Helix Nebula 63 solar corona 63 stellar nurseries 63 starburst galaxy 63 Epsilon Aurigae 63 chromosphere 63 AB Aurigae 63 extrasolar 63 protoplanetary disk 63 Bok globules 62 Orion Nebula 62 cosmological distances 62 Neutron stars 62 HII regions 62 exo planets 62 circumstellar disk 62 Carina Nebula 62 supernova explosions 62 protostar 62 blue supergiant 62 intrinsic brightness 62 Coma Cluster 62 magnetar 62 KBOs 62 supernova remnant 62 protoplanetary discs 62 WASP #b 62 Milky Way halo 62 jovian 62 circumstellar disks 62 X ray binaries 62 RS Ophiuchi 62 exoplanets orbiting 62 dense clumps 62 interstellar dust clouds 62 Trifid 62 X ray emission 62 dynamical evolution 61 Epsilon Eridani 61 elongated orbits 61 magnetars 61 relativistic jets 61 lensing galaxy 61 AU Mic 61 Type 1a supernovae 61 millisecond pulsars 61 type Ia supernova 61 barred spiral galaxy 61 gravitational interaction 61 galaxy NGC 61 circumstellar dust 61 Galilean moons 61 ionized hydrogen 61 Type Ia 61 constellation Virgo 61 Orion constellation 61 elliptical galaxy 61 Earthlike planets 61 energetic electrons 61 accretion disk 61 Omega Nebula 61 X ray wavelengths 61 P/# A2 61 supermassive 61 starlike 61 SN #gy 61 asteroidal 61 supernova explosion 61 Jupiter moon Io 61 distant galaxies 61 Lagoon Nebula 61 supersymmetric particles 61 supernova SN 61 chemical abundances 61 electron neutrinos 61 moon Mimas 61 airglow 61 Helix nebula 61 globulars 61 planets 61 Saturn magnetosphere 60 stony meteorites 60 Omega Centauri 60 moon Enceladus 60 Higgs bosons 60 Rosette Nebula 60 Orion nebula 60 Stephan Quintet 60 interacting galaxies 60 Beta Pictoris 60 planetesimals 60 galactic disk 60 YORP effect 60 Evolution Explorer 60 spatially resolved 60 Henize #-# 60 gaseous planets 60 distant quasar 60 Kuiper belt object 60 RHESSI 60 planets orbits 60 cosmic phenomena 60 luminosities 60 type Ia supernovae 60 novae 60 Cat Paw Nebula 60 GQ Lupi 60 Wolf Rayet stars 60 axions 60 magnetic monopoles 60 permanently shadowed craters 60 retrograde orbit 60 icy comets 60 solar nebula 60 faint galaxies 60 dwarf galaxy 60 Planetary nebulae 60 planet Uranus 60 constellation Eridanus 60 moon Io 60 galactic cosmic rays 60 Puppis 60 globular cluster M# 60 GRBs 60 Cosmic Microwave Background 60 galaxy M# [002] 60 chondrules 60 noctilucent clouds 60 galaxy M# [001] 59 distant supernovae 59 active galactic nucleus 59 prominences 59 Cassini flyby 59 Hot Jupiters 59 Kuiper belt 59 Hanny Voorwerp 59 extragalactic 59 relativistic particles 59 protoplanets 59 Fornax cluster 59 Corot 7b 59 luminous galaxies 59 constellation Cassiopeia 59 Virgo Cluster 59 trans Neptunian objects 59 gamma ray flares 59 comets asteroids 59 Dwarf galaxies 59 sized planets orbiting 59 SNR #-#.# 59 Type Ia supernova 59 magnetic substorms 59 planets comets 59 aurorae 59 proto cluster 59 polar mesospheric clouds 59 submillimeter galaxies 59 HD#b 59 planetesimal 59 starquakes 59 gravitationally bound 59 Large Magellanic Cloud 59 zodiacal dust 59 X ray emitting 59 VB #b 59 dirty snowballs 59 Comet Holmes 59 Saturnian moons 59 coronal mass ejections CMEs 59 dwarf spheroidal galaxies 59 Zeta Ophiuchi 59 nebulosity 59 spiral nebulae 59 VY Canis Majoris 59 heavily cratered 59 planets Uranus 59 constellation Cetus 59 photosphere 59 filamentary structures 59 distant galaxy clusters 59 blazars 59 brown dwarfs 59 SN#A 59 eclipsing binaries 59 Type Ia supernovas 59 rotating neutron stars 59 lobate scarps 59 HL Tau 59 protoplanetary 59 Horsehead Nebula 59 Kuiper Belt object 59 Trifid Nebula 59 ejecta 59 comet McNaught 58 nucleosynthesis 58 rocky planets 58 infall 58 elliptical galaxies 58 globular cluster 58 comets orbiting 58 Fomalhaut b 58 foreground galaxy 58 Reiner Gamma 58 coronal holes 58 ultraviolet wavelengths 58 V# Mon 58 spectroscopically 58 lunar craters 58 infalling 58 PSR B# +# 58 constellation Hercules 58 gaseous planet 58 distant galaxy 58 Tarantula Nebula 58 Fermi telescope 58 proto galaxies 58 moonlets 58 Cepheid variables 58 star Spica 58 quasars 58 planet HD #b 58 galaxies 58 emission nebula 58 coronal loop 58 galaxy cluster 58 Io Europa 58 magma ocean 58 polarimetry 58 planemos 58 planets asteroids 58 carbonate globules 58 yardangs 58 Cepheids 58 TrES 4 58 backscattered 58 carbonaceous chondrites 58 Galactic cosmic rays 58 tholins 58 baryonic 58 GALEX 58 quasar 58 inhabitable planets 58 supernova 58 exoplanetary 58 globular clusters 58 magnetospheric 58 G#.# +#.# 58 Coma cluster 58 supernovae 58 spectral fingerprints 58 occultations 58 silicon monoxide 58 Dumbbell Nebula 58 metallicity 58 cosmic cannibal 58 Magnetars 58 ULIRGs 58 Gamma ray bursts 58 impactors 58 planet Gliese #c 58 HD# [002] 58 exosphere 58 Supernova #A 58 filamentary 58 SDSS II 58 IR wavelengths 58 microquasar 58 Saturnian moon 58 galaxy clusters 58 dwarf galaxies 57 Saturn rings 57 silicate dust 57 moons Phobos 57 Delta Cephei 57 proto planetary disk 57 gravitational lensing 57 helium nuclei 57 helium atoms 57 Great Orion Nebula 57 auroral 57 neutralinos 57 Trapezium 57 particle acceleration 57 MG J# +# 57 brown dwarf 57 astronomical objects 57 stellar occultations 57 Ring Nebula 57 dusty disks 57 zodiac constellations 57 sundog 57 distant quasars 57 giant elliptical galaxy 57 Eta Carinae 57 spiral galaxy 57 spicules 57 dust enshrouded 57 spherically symmetric 57 Sagittarius B2 57 ionized particles 57 polar vortex 57 Crab Nebula 57 IRAS #-# 57 transiting planets 57 Carina constellation 57 spiral galaxies 57 starbursts 57 galactic clusters 57 X ray binary 57 Supernovae 57 Kuiper Belt Object 57 supernovas 57 ionised gas 57 icy moon Enceladus 57 BP Psc 57 colloidal crystals 57 GJ#b 57 Geminga 57 smallest exoplanet 57 Comet Halley 57 Orionid 57 blazar 57 infrared spectra 57 CoRoT #b 57 CMB radiation 57 Pleiades cluster 57 gravitational radiation 57 super Earths 57 moonquakes 57 galactic mergers 57 starburst galaxies 57 zodiacal light 57 moons circling 57 meridional flow 57 X ray telescopes 57 Martian dust 57 planetary orbits 57 Oort cloud 57 spectroscope 57 terrestrial planets 57 Alfven waves 57 Galilean satellites 57 IRC +# 57 Heliospheric Observatory SOHO 57 planets orbiting stars 57 spinning neutron stars 57 Earthlike 57 spiral galaxy NGC 57 Mercury magnetosphere 57 high redshift galaxies 57 Earthlike planet 56 gravitational tides 56 Milky Way galaxy 56 Alfvén waves 56 magnetite crystals 56 Monoceros 56 Noctilucent clouds 56 nebula NGC 56 millisecond pulsar 56 RX J# 56 extrasolar planets 56 neutrino particles 56 Betelgeuse 56 submillimeter 56 asteroids comets 56 BLG #Lb 56 star Beta Pictoris 56 Cosmic rays 56 Comet Tempel Tuttle 56 X ray pulses 56 IRAS 4B 56 Ontario Lacus 56 Beta Pictoris b 56 RRATs 56 elliptical galaxy NGC 56 Saturn moon Mimas 56 gravitational lenses 56 GJ #b [001] 56 gamma ray emission 56 Spiral galaxies 56 novas 56 KH #D 56 SN #C 56 planets moons 56 planet magnetosphere 56 planetoids 56 ionized gases 56 isotopic compositions 56 constellation Carina 56 chondrites 56 hypernova 56 emit X rays 56 energetic cosmic rays 56 Upsilon Andromedae b 56 constellation Gemini 56 Bullet Cluster 56 Astrophysicists 56 Type Ia supernovae 56 Iapetus 56 Microlensing 56 V# Sgr 56 intracluster 56 Saturn Enceladus 56 crystalline silicates 56 retrograde orbits 56 planetary magnetospheres 56 habitable planets 56 constellation Centaurus 56 binary asteroid 56 Perseus Cluster 56 Neptune Uranus 56 submillimetre wavelengths 56 Type 1a supernova 56 morphologies 56 Scorpii 56 astrophysical phenomena 56 transiting planet 56 hot Jupiters 56 shadowed craters 56 Kuiper Belt objects 56 magnetic reconnection 56 subsurface ocean 56 Syrtis Major 56 gravitational interactions 56 TGFs 56 binary asteroids 56 meteoroids 56 gamma rays emitted 56 Wolf Rayet star 56 colliding galaxies 56 constellation Taurus 56 Milky Way Galaxy 56 Maunder minimum 56 carbonate minerals 56 BP Piscium 56 comets 56 Hawking radiation 56 inner moons 56 isotope fractionation 56 lowermost mantle 56 constellation Aquarius 56 SMBHs 56 Anisotropy Probe WMAP 56 substorm 56 spiral galaxy M# 56 gibbous 56 redshifts 56 planets orbiting 55 primitive meteorites 55 brightnesses 55 X ray observatory 55 gravitational pulls 55 radial velocity technique 55 Lyman alpha 55 giant elliptical galaxies 55 gravity warps 55 planets orbiting distant 55 supermassive black holes 55 habitable zones 55 galactic cores 55 fainter objects 55 interstellar dust grains 55 neutron star 55 Triangulum Galaxy 55 single celled algae 55 Small Magellanic Cloud 55 baryon 55 Andromeda Galaxy 55 Butterfly Nebula 55 Corona Australis 55 gravitational perturbations 55 comet nuclei 55 Doppler shifts 55 Globular clusters 55 cosmological theories 55 Solar flares 55 Oort Cloud 55 Pulsars 55 cluster NGC 55 galactic halo 55 gravitational lens 55 Saturn Jupiter Uranus 55 GRB #B 55 Mercury exosphere 55 ionized gas 55 galactic collisions 55 galaxies collide 55 SMBH 55 earthshine 55 dynamical processes 55 X ray observatories 55 Bose Einstein condensates 55 dusty cocoons 55 Ophiuchi 55 microlensing events 55 Solar TErrestrial RElations Observatory 55 SNe Ia 55 extrasolar planet HD #b 55 crustal thickness 55 Seyfert galaxies 55 masers 55 elemental composition 55 silicate crystals 55 spacecraft flyby 55 Galaxy Evolution 55 galaxy 55 magnetic fields 55 comet Tempel Tuttle 55 Haumea 55 innermost planet 55 HM Cancri 55 Voorwerp 55 antineutrinos 55 constellation Ophiuchus 55 shadowy craters 55 sunlike star 55 magnetic polarity 55 highly elliptical orbits 55 periodic dimming 55 OGLE TR #b 55 elemental abundances 55 weakly interacting 55 electromagnetic flux 55 moonlet 55 celestial object 55 HiRISE image 55 WMAP satellite 55 post perovskite 55 ejecta blanket 55 gravitational tugs 55 vortices 55 Corot 9b 55 brightest supernova 55 Orionids 55 globular star 55 distant supernovas 55 astrophysical objects 55 cosmic ray flux 55 Galileo spacecraft 55 accreting 55 spectroscopic measurements 55 hydroxyl molecules 55 NGC# 55 Cepheid variable 55 Keck Telescope 55 VISTA telescope 55 silicate mantle 55 polar craters 55 W boson 55 isotopic ratios 55 CoRoT 9b 55 gravitational microlensing 55 X ray spectrometer 55 XMM Newton 55 occulted 55 outer corona 55 CoRoT satellite 55 mineral hematite 54 volcanic vents 54 Type Ic supernovae 54 HD #b [002] 54 spheroidal 54 olivine mineral 54 constellation Sagittarius 54 millimeter wavelengths 54 spherules 54 journal Icarus 54 moon Dione 54 Cosmic Microwave Background CMB 54 Fomalhaut 54 Hale Bopp 54 periodic oscillations 54 Jupiter Uranus 54 asterism 54 basaltic rocks 54 De Pontieu 54 constellation Andromeda 54 infrared wavelengths 54 Trojan asteroids 54 pulsars 54 Hipparcos 54 Antennae Galaxies 54 diffuse aurora 54 astrometry 54 ultracold atoms 54 Magellanic Clouds 54 afterglows 54 Crab Pulsar 54 reionization 54 haloes 54 mineral olivine 54 CAIs 54 extrasolar planetary systems 54 moon Ganymede 54 interstellar medium 54 meteoritic material 54 auroral displays 54 Spitzer infrared spectrograph 54 magnetospheres 54 constellation Orion 54 Gliese #c 54 magnetic monopole 54 constellation Leo 54 Astrophysical 54 Candor Chasma 54 submillimetre 54 star Gliese 54 suns 54 Quaoar 54 silicates 54 earthlike planets 54 constellation Lyra 54 arcminutes 54 HIP #b 54 faintest galaxies 54 magnetic excitations 54 inner Oort Cloud 54 spectral fingerprint 54 X ray spectra 54 Caloris 54 nanobubbles 54 bosonic 54 APXS 54 planetary Transits 54 constellation Perseus 54 VHE gamma rays 54 Aurigid 54 binary quasar 54 eccentric orbits 54 Wilkinson Microwave Anisotropy Probe 54 Gravitational lensing 54 Spectrograph 54 electrons protons 54 spinning neutron 54 weak gravitational lensing 54 Muchachos Observatory 54 volcanic moon Io 54 GRB# 54 glows brightly 54 Arsia Mons 54 SN #E 54 inner asteroid belt 54 Eridani 54 constellations Cygnus 54 constellation Ursa Major 54 NASA Wilkinson Microwave 54 rotational axis 54 soliton 54 constellation Scorpius 54 phyllosilicates 54 Sagittarius dwarf galaxy 54 solitons 54 Comet Elenin 54 Peony nebula star 54 Ulysses spacecraft 54 neutron stars 54 lithium atoms 54 Triangulum 54 comet 54 fault scarps 54 X ray afterglow 54 unaided eye 54 thermonuclear reactions 54 exoplanets planets 54 nuclei 54 Sunspots 54 Comet Encke 54 Gamma ray 54 Andromeda galaxy 54 heliosphere 54 moons Europa 54 XTE J# 54 exoplanets 54 Jovian moons 54 torus 54 Toutatis 54 olivine crystals 54 redshifted 54 planetary embryos 54 superheavy elements 54 molten magma 54 Diviner 54 Tharsis Rise 54 cosmic strings 54 Subaru telescope 54 infrared wavelength 54 Comet 9P/Tempel 1 54 emits X rays 54 comet tail 54 constellation Aquila 54 Tarantula nebula 54 graphite whiskers 54 Cassiopeia 54 ringed planet 54 collisional 54 spinels 54 lunar meteorites 54 cosmological parameters 54 rotating neutron 54 Martian craters 54 stellar seismology 53 Earths orbiting 53 planet WASP #b 53 galactic nuclei 53 superluminal 53 silicate grains 53 Dust devils 53 orbiting planets 53 cosmic ray intensity 53 southern constellation Carina 53 hydrated minerals 53 meteorite impacts 53 cosmic microwave background 53 planet Gliese #g 53 ESO PR 53 sterile neutrino 53 Extrasolar planets 53 evanescent waves 53 Kraken Mare 53 superstrings 53 sulfate aerosols 53 lunar highlands 53 detect gravitational waves 53 greenish color 53 chondritic meteorites 53 sparticles 53 Orionid meteors 53 volcanic lava flows 53 diffraction patterns 53 gamma ray emitting 53 electron neutrino 53 outermost planets 53 Kepler #b 53 stellar occultation 53 Meteor showers 53 mantle plumes 53 permanently shadowed regions 53 gravitationally 53 diffraction pattern 53 gamma ray observatory 53 Milky Way 53 coronagraph 53 transiting exoplanet 53 retroreflector 53 Mini TES 53 gamma ray burst 53 muon neutrino 53 celestial sphere 53 PSR J# 53 celestial phenomena 53 constellation Cygnus 53 Pleiades star 53 Gaensler 53 Saturn aurora 53 solar prominences 53 constellation Coma Berenices 53 mesosphere 53 Pegasi 53 dust motes 53 infalling gas 53 constellation Pisces 53 TNOs 53 RXTE 53 tidal tails 53 cosmic ray collisions 53 spectroscopic observations 53 Gamma ray burst 53 supermassive black hole 53 Hubble Constant 53 pions 53 Pluto Charon 53 Cancri e 53 Bose Einstein condensation 53 moons 53 punctate 53 Spitzer Space Telescope 53 Orcus Patera 53 Saturn auroras 53 CoRoT 7b 53 prograde 53 kaons 53 galactic bulge 53 Methone 53 celestial bodies 53 Eridanus 53 quasicrystal 53 galaxies nebulae 53 ULP cepheids 53 extrasolar planetary 53 cometary material 53 planetary transits 53 constellation Auriga 53 tau neutrinos 53 Rydberg atom 53 Exoplanets 53 Quadrantid 53 ALH# 53 blue straggler 53 SNe 53 Andromeda halo 53 extrasolar planets orbiting 53 nucleon 53 planets orbiting sun 53 Comet Hale Bopp 53 visible wavelengths 53 Venusian atmosphere 53 called lobate scarps 53 trimers 53 faraway galaxies 53 albedo reflectivity 53 Uranus Neptune 53 submarine volcanoes 53 astrophysical 53 Antiope 53 Lyrids 53 aragonite 53 GRB #A 53 asteroseismology 53 asteroids orbiting 53 gamma ray bursts 53 hematite mineral 53 Earth magnetosphere 53 basalts 53 lavas 53 Sedna 53 mineralogical composition 53 helium atom 53 ray Space Telescope 53 presolar grains 53 R Coronae Borealis 53 silicate minerals 53 optical wavelengths 53 cirrus cloud 53 Saturn outermost 53 Muons 53 optical spectra 53 carbon spherules 53 infrared spectrograph 53 periodicities 53 ultraviolet radiation emitted 53 yttrium barium copper 53 Gamma rays 53 supermassive stars 53 ultraviolet photons 53 Phoebe orbits 52 Hawking Radiation 52 Saturn Uranus 52 oppositely directed 52 Mpc 52 supernovae explosions 52 aurora 52 electrons positrons 52 calcite crystals 52 Saturn moon Enceladus 52 Active Galactic Nuclei 52 Infrared Thermal Imaging Spectrometer 52 Earth ionosphere 52 Elysium Planitia 52 gravitationally lensed 52 coronal heating 52 Jupiter Saturn 52 spectral measurements 52 cumulus cloud 52 exosolar planets 52 quark gluon plasma 52 Kelvin Helmholtz 52 superbubble 52 komatiitic 52 exoplanetary systems 52 telescopic observations 52 precessing 52 radioactive decay 52 quantum particles 52 Digitized Sky Survey 52 lenticular clouds 52 auroras 52 coronal mass ejections 52 filaments 52 atmospheric phenomena 52 noctilucent 52 micron wavelengths 52 WHIM 52 cosmic microwave radiation 52 planetoid 52 HUDF 52 Rayleigh scattering 52 Cometary 52 Pieter van Dokkum 52 spacetime 52 HiRISE camera aboard 52 photosynthetic organisms 52 meteoroid impacts 52 inhomogeneous 52 Martian meteorites 52 Pluto Eris 52 Super Earths 52 macroscopically 52 constellation Draco 52 UDFy # 52 Gusev crater 52 interannual variability 52 biosignatures 52 cirrus clouds 52 phosphorescence 52 antineutrino 52 flood basalts 52 ESO VLT 52 astronomical phenomena 52 UV photons 52 Voyager spacecraft 52 ESA XMM Newton 52 Herbig Haro 52 infrared imager 52 GROND 52 NGC #A 52 #gy 52 observable universe 52 exoplanet orbiting 52 Nikku Madhusudhan 52 nebulas 52 magnons 52 Martian rovers 52 ALFALFA 52 overlying layers 52 atomic lattice 52 neutralino 52 corona discharge 52 lunar equator 52 plagioclase 52 orbits Saturn 52 Olympus Mons 52 planets astronomers 52 electroweak 52 gravitational waves 52 heliospheric 52 Arabia Terra 52 galaxy formation 52 Uranian 52 Wolszczan 52 Bose Einstein Condensate 52 noble gases 52 oxygen isotopes 52 elliptical orbits 52 cosmological models 52 constellation Bootes 52 comet nucleus 52 HARPS instrument 52 Coma Berenices 52 Jupiter Ganymede 52 ESO telescope 52 photochemical reactions 52 Exoplanet 52 silicate mineral 52 cosmic ray particles 52 spherical halo 52 magnetosphere 52 Mimas 52 atomic nuclei 52 pyroxene