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(Click for frequent words.) 79 supernova explosions 75 dwarf galaxy 74 planetary nebula 74 SN #gy 73 Eta Carinae 73 supernovae 73 Type Ia supernova 73 supernova 73 neutron star 72 protoplanetary disk 72 WASP #b 72 magnetar 71 protostar 71 elliptical galaxy 71 galaxies 71 X ray emission 70 SN #A 70 Wolf Rayet star 70 protoplanets 70 supermassive black hole 70 millisecond pulsar 70 solar nebula 70 neutron stars 69 red supergiant 69 gamma ray burst 69 supernova remnants 69 Fomalhaut b 69 pulsar 69 globular clusters 69 quasars 69 accretion disk 68 quasar 68 runaway thermonuclear 68 supergiant star 68 galaxy NGC 68 globular cluster 68 starburst galaxy 68 GRBs 68 distant galaxy 68 protoplanet 68 supermassive black holes 68 merging galaxies 68 Beta Pictoris 67 gravitational interactions 67 galaxy 67 Late Heavy Bombardment 67 RS Ophiuchi 67 nebula 67 blue supergiant 67 BP Psc 67 supernova remnant 67 Large Magellanic Cloud 67 supernovae explosions 67 planetesimals 67 HL Tau 67 circumstellar 66 planet orbiting 66 galactic disk 66 substorm 66 AB Aurigae 66 protostars 66 colliding galaxies 66 supernovas 66 GRB # 66 galactic mergers 66 Milky Way galaxy 66 starburst galaxies 66 planetary nebulae 66 reionization 66 infall 66 exoplanets orbiting 66 magnetars 66 elliptical galaxies 66 Upsilon Andromedae 65 type Ia supernova 65 ejecta 65 galaxy cluster 65 distant galaxies 65 Neutron stars 65 G#.# +#.# 65 galaxy clusters 65 red supergiants 65 dwarf galaxies 65 constellation Cassiopeia 65 planets 65 galactic collisions 65 interstellar medium 65 gaseous planet 65 microquasar 64 Milky Way Galaxy 64 comet 64 V# Mon 64 type Ia supernovae 64 circumstellar disk 64 Andromeda galaxy 64 X ray binary 64 gamma ray emission 64 sunlike star 64 Antennae Galaxies 64 Epsilon Eridani 64 HD#b 64 Crab Nebula 64 gamma ray bursts 64 infalling 64 galaxy M# [001] 64 Arches Cluster 64 rocky planets 64 circumstellar disks 64 pulsars 64 Red Rectangle 63 terrestrial planets 63 comets 63 protoplanetary disks 63 active galactic nuclei 63 galaxy M# [002] 63 HIP #b 63 Type Ia 63 coronal mass ejection 63 brown dwarf 63 interstellar clouds 63 Wolf Rayet stars 63 accretion disks 63 GJ #b [001] 63 GRB #B 63 Bullet Cluster 63 brown dwarfs 63 stellar nurseries 63 nebular 63 AGNs 63 SN#A 63 planets orbits 63 galactic clusters 63 solar flares 63 proto galaxies 63 nucleosynthesis 63 spiral galaxy 63 thermonuclear explosion 63 observable universe 63 quark gluon plasma 63 millisecond pulsars 62 moon Io 62 Gravitational waves 62 brightest supernova 62 planet WASP #b 62 eclipsing binary 62 gravitational interaction 62 spiral galaxies 62 gravitationally bound 62 Gamma ray bursts 62 accreting 62 hypervelocity stars 62 Planetary nebulae 62 VY Canis Majoris 62 Comet Holmes 62 Orion Nebula 62 aurorae 62 coronal mass ejections CMEs 62 GJ#b 62 Type Ia supernovas 62 AU Mic 62 globulars 62 giant elliptical galaxy 62 spiral galaxy NGC 62 Andromeda Galaxy 62 asteroidal 62 Supernovae 62 Milky Way 62 Carina constellation 62 comet nucleus 61 Kepler #b 61 cluster NGC 61 Carina Nebula 61 X ray pulses 61 X ray telescopes 61 meteorite impacts 61 Supernova #A 61 Kuiper Belt object 61 gravitational tides 61 planets orbiting 61 Beta Pictoris b 61 Henize #-# 61 nebulae 61 constellation Virgo 61 Cygnus X 61 Corot 7b 61 solar corona 61 relativistic jets 61 galaxy formation 61 extrasolar 61 supermassive stars 61 magma ocean 61 BP Piscium 61 proplyds 61 galaxies collide 61 interstellar dust clouds 61 impactors 61 KT extinction 61 sunlike stars 61 Type 1a supernova 61 SN #C 61 interstellar cloud 61 Bug Nebula 61 TrES 4 61 Oort Cloud 61 metallicity 61 helium nuclei 61 supernova SN 61 HM Cancri 61 supermassive 60 Zeta Ophiuchi 60 RS Oph 60 chondrules 60 Virgo Cluster 60 infalling gas 60 rotating neutron 60 planet orbits 60 blue straggler 60 thermonuclear reactions 60 substorms 60 exoplanet orbiting 60 planet HD #b 60 GRB# 60 globular star 60 Milky Way halo 60 magnetic reconnection 60 baryonic 60 CoRoT 7b 60 elongated orbits 60 moons orbiting 60 Sagittarius B2 60 Comet Shoemaker Levy 60 Hot Jupiters 60 exoplanets 60 Virgo cluster 60 P/# A2 60 filamentary structure 60 radioactive decay 60 energetic gamma rays 60 luminous galaxies 60 distant quasar 60 lensing galaxy 60 moonlets 59 afterglows 59 Hanny Voorwerp 59 Kuiper belt 59 Type 1a supernovae 59 transiting planet 59 meteoroids 59 highly magnetized neutron 59 impactor 59 distant supernovae 59 constellation Hercules 59 Epsilon Aurigae 59 atomic nuclei 59 Ordovician extinction 59 SN #D 59 galactic cosmic rays 59 Jupiter moon Io 59 coronal mass ejections 59 spinning neutron 59 X ray Observatory 59 constellation Carina 59 blazar 59 cosmic ray 59 Hubble observations 59 active galactic nucleus 59 planemos 59 proto planetary disk 59 GQ Lupi 59 gravitationally 59 interacting galaxies 59 Omega Centauri 59 gamma rays 59 blazars 59 noctilucent clouds 59 hypernova 59 barred spiral galaxy 59 transiting exoplanet 59 gravitational microlensing 59 cosmic rays 59 Type Ia supernovae 59 SNR #-#.# 59 GJ #b [002] 59 sodium atoms 59 retrograde orbit 59 Triangulum 59 Oort cloud 59 planets moons 59 energetic electrons 59 Orion nebula 59 V# Sgr 59 icy comets 59 X ray emitting 59 Gliese #c 59 neighboring Andromeda galaxy 59 superdense neutron star 59 SN #E 59 gamma ray bursts GRBs 59 Fermi telescope 59 Geminga 59 gamma ray flares 59 asteroid 58 intrinsic brightness 58 XTE J# 58 Trifid Nebula 58 Fornax cluster 58 orbits 58 HD #b [002] 58 jovian 58 reflection nebula 58 galactic cores 58 astronomers 58 novae 58 Magnetars 58 Permian extinction 58 Eagle Nebula 58 icy moons 58 polar vortex 58 photosphere 58 HD# [002] 58 extrasolar planets 58 cosmic cannibal 58 Earthlike planets 58 star Gliese 58 moonlet 58 galactic alignment 58 collisional 58 Betelgeuse 58 astronomical objects 58 superdense 58 Scheila 58 meteoroid 58 celestial object 58 inner asteroid belt 58 RHESSI 58 planetesimal 58 emission nebula 58 galactic halo 58 Voorwerp 58 J# +# [002] 58 meteorite bombardment 58 coronal loop 58 protoplanetary 58 subatomic particles 58 NASA Chandra 58 interstellar dust 58 spherically symmetric 58 CoRoT #b 58 asteroids 58 supergiant stars 58 Cat Paw Nebula 58 magnetosphere 58 QQ# 58 YORP effect 58 Kuiper belt objects 58 Pegasi 58 KBOs 58 constellation Aquarius 57 comets orbiting 57 constellation Ursa Major 57 Evolution Explorer 57 helium atoms 57 subatomic particle 57 Galileo spacecraft 57 PSR J# 57 Cosmic Microwave Background CMB 57 airbursts 57 Rosette Nebula 57 Cancri e 57 comet McNaught 57 habitable planets 57 Murchison meteorite 57 exo planet 57 Hawking radiation 57 SMBH 57 gravitational radiation 57 lunar crust 57 cometary 57 Butterfly Nebula 57 Maunder minimum 57 Wolszczan 57 neutrino 57 Proxima Centauri 57 relativistic particles 57 positrons 57 CAIs 57 ULIRGs 57 magnetic fields 57 orbiting planets 57 planetary orbits 57 occultations 57 super Earths 57 spacetime 57 Earth magnetosphere 57 Gliese #g 57 Cepheids 57 heliosheath 57 protoplanetary discs 57 extrasolar planetary 57 comet Hale Bopp 57 Big Bang 57 cosmic microwave background 57 KH #D 57 Solar System 57 Galaxy Evolution 57 X ray binaries 57 spherical halo 57 RXTE 57 elliptical galaxy NGC 57 ionized gas 57 Magellanic Clouds 57 sun corona 57 stellar occultations 57 planetoid 57 neutrinos 57 Tycho supernova 57 constellation Centaurus 57 Saturn rings 57 HD #b [001] 57 Doradus 57 spacecraft flyby 57 RX J# 57 Lagoon Nebula 57 auroral displays 57 hot Jupiters 57 starquakes 57 coronal loops 57 exoplanetary 57 gravitational tugs 56 volcanism 56 moon Enceladus 56 SMM J# 56 lunar perigee 56 explosive eruptions 56 astrophysical 56 PSR B# +# 56 radial velocity 56 eccentric orbits 56 meteoroid impacts 56 geomagnetic storm 56 galaxy supermassive black 56 dwarf spheroidal galaxies 56 spinning neutron stars 56 Gliese #d 56 Higgs bosons 56 strangelet 56 KT boundary 56 kaons 56 X ray wavelengths 56 Coma Cluster 56 gravitational lensing 56 planets orbiting distant 56 filamentary structures 56 protoplanetary disc 56 ultraviolet wavelengths 56 dynamical evolution 56 bolide 56 Paleocene Eocene Thermal Maximum 56 planet Uranus 56 TGFs 56 Stephan Quintet 56 XMM Newton 56 transiting planets 56 extragalactic 56 constellation Scorpius 56 planet magnetosphere 56 corona 56 R#a# 56 X ray observatory 56 orbiting 56 Chicxulub 56 mu Arae 56 gravitational waves 56 phyllosilicates 56 Comet Halley 56 ringed planet 56 emit X rays 56 Cambrian explosion 56 Solar flares 56 deuterium atoms 56 Kuiper belt object 56 outer planets 56 silicon monoxide 56 electroweak 56 exoplanet 56 Kuiper Belt Objects 56 constellation Ophiuchus 56 exo planets 56 cosmological distances 56 Gliese #e 56 electron neutrinos 56 exosphere 56 nuclei 56 distant galaxy clusters 56 CMEs 56 carbonaceous chondrites 56 carbonate minerals 56 Higgs particle 56 carbonaceous chondrite 56 Churyumov Gerasimenko 56 particle collisions 56 binary quasar 56 Komossa 56 meteoritic material 56 dinosaur extinction 56 planetary embryos 56 trans Neptunian objects 56 particle acceleration 56 binary asteroid 56 asteroid belt 56 Helix Nebula 56 spinning pulsar 56 weakly interacting 55 Comet 9P/Tempel 1 55 #gy 55 CoRoT 9b 55 magnetospheric 55 outer layers 55 gravitational 55 asteroids comets 55 Tarantula nebula 55 Baptistina 55 comets asteroids 55 cosmic ray collisions 55 Konacki 55 Small Magellanic Cloud 55 celestial phenomena 55 Galilean moons 55 cryovolcanism 55 moon Mimas 55 superluminal 55 primitive meteorites 55 Bok globules 55 emits X rays 55 Gamma rays 55 axions 55 Spitzer Space Telescope 55 Toutatis 55 Cepheid variable 55 constellation Coma Berenices 55 Cambrian Explosion 55 neutralinos 55 interstellar space 55 SNe Ia 55 planets orbiting sun 55 heliosphere 55 Orion constellation 55 microlensing events 55 meteor shower 55 NGC #A 55 Tauri Sb 55 proton collisions 55 galaxy NGC# 55 olivine 55 galactic 55 energetic cosmic rays 55 microlensing 55 comet tail 55 Fomalhaut 55 Cancri 55 Great Oxidation Event 55 IRC +# 55 tidal bulge 55 gravitational lens 55 gamma ray burst GRB 55 meteor impacts 55 comet Shoemaker Levy 55 luminosities 55 Upsilon Andromedae b 55 Iapetus 55 Cosmic Microwave Background 55 ion collisions 55 Saturn magnetosphere 55 inhabitable planets 55 ultraluminous galaxy 55 Jupiter magnetosphere 55 redshift 55 constellation Sagittarius 55 fainter objects 55 X ray afterglow 55 supersymmetric particles 55 chemical abundances 55 cometary debris 55 oppositely directed 55 globular cluster M# 55 extrasolar planet 55 meteor 55 Hadean Eon 55 #P/Churyumov-Gerasimenko 55 proto cluster 55 PSR J# +# 55 COROT 7b 55 ionised gas 55 Tarantula Nebula 54 rotational axis 54 WMAP satellite 54 Kuiper Belt 54 chromosphere 54 radioactive nuclei 54 Hale Bopp 54 sized planets orbiting 54 circular orbits 54 supercontinent 54 maser emission 54 VB #b 54 NASA Voyager spacecraft 54 Shoemaker Levy 54 planet Gliese #c 54 Ring Nebula 54 rotating neutron stars 54 Mojzsis 54 IRAS 4B 54 constellation Aries 54 redshifted 54 Trojan asteroids 54 gravity warps 54 Alfvén waves 54 constellation Puppis 54 masers 54 Halley comet 54 Corot 9b 54 Sagittarius dwarf galaxy 54 magnetic monopoles 54 planets orbiting stars 54 zodiacal dust 54 Enceladus 54 cosmic ray particles 54 constellation Lyra 54 proton proton collisions 54 hypervelocity star 54 galactic cannibalism 54 ejecta blanket 54 GeV 54 spatially resolved 54 Saturnian moon 54 asteroid impacts 54 BLG #Lb 54 magnetic substorms 54 Comet Hale Bopp 54 Hipparcos 54 muon neutrinos 54 galactic bulge 54 antimatter particles 54 planet Gliese #g 54 subsurface ocean 54 gravitational perturbations 54 spherules 54 Earthlike planet 54 gravitational attraction 54 NGC# 54 glaciations 54 interstellar dust grains 54 R Coronae Borealis 54 Pluto Charon 54 super nova 54 Saturnian 54 volcanic moon Io 54 moon Ganymede 54 ESA XMM Newton 54 faintest galaxies 54 Gal Yam 54 Cepheid variables 54 detect gravitational waves 54 gaseous envelope 54 CoRoT satellite 54 silicate dust 54 Phaethon 54 TW Hydrae 54 olivine mineral 54 chondrites 54 planets circling 54 high redshift galaxies 54 innermost planet 54 habitable planet 53 sterile neutrino 53 dense neutron stars 53 RRATs 53 planetary 53 dense clumps 53 infalling matter 53 comet Tempel 1 53 submillimeter galaxies 53 zodiacal light 53 Active Galactic Nuclei 53 subatomic scale 53 meteorite 53 Chicxulub impact 53 SNe 53 ionized particles 53 Orionids 53 quantum particle 53 silicates 53 elemental abundances 53 Perseus cluster 53 strangelets 53 IRAS #-# 53 Viking Lander 53 gamma ray radiation 53 Comet Elenin 53 brightnesses 53 gravitational tidal 53 Gerard Kuiper 53 constellation Taurus 53 distant quasars 53 magnetic dynamo 53 auroras 53 Tycho supernova remnant 53 bosonic 53 B mesons 53 Orionid 53 visible wavelengths 53 constellation Pegasus 53 Triangulum Galaxy 53 sundog 53 novas 53 solitons 53 COROT 53 Galactic cosmic rays 53 giant elliptical galaxies 53 Comet Tempel Tuttle 53 planets comets 53 Swift Tuttle 53 colliding protons 53 auroral 53 W boson 53 planet gravitational tug 53 faraway galaxies 53 cosmic phenomena 53 Kuiper Belt Object 53 coronal hole 53 Mandushev 53 atomic nucleus 53 abiogenesis 53 faint galaxies 53 smallest exoplanet 53 CMB radiation 53 Trifid 53 Mimas 53 Cosmologists 53 ultraviolet radiation emitted 53 silicate crystals 53 prebiotic molecules 53 Jovian atmosphere 53 Tunguska object 53 southern constellation Carina 53 blackholes 53 Lyrids 53 impactor spacecraft 53 galactic nucleus 53 GALEX 53 strange quark 53 VHE gamma rays 53 X ray observatories 53 moonquakes 53 Alex Filippenko 53 muons 53 supergiant 53 thermonuclear fusion 53 Haumea 53 cometary material 53 Coma cluster 53 extrasolar planetary systems 53 radial velocity technique 53 cometary dust 53 planetary nebulas 53 stony meteorites 53 protons collide 53 supercontinents 53 Jupiter Ganymede 53 Voyager spacecraft 53 Doppler shifts 53 gaseous planets 53 Snowball Earth 53 Comet Hartley 2 53 neutrons 53 Kepler 9c 53 stellar seismology 53 stellar occultation 53 Earths orbiting 53 lunar meteorites 53 Chi Cygni 53 Venusian atmosphere 53 ionized hydrogen 53 Deep Impact probe 53 Jenniskens 53 dynamical 53 attosecond 53 periodic dimming 53 magnetic polarity 53 Eridani 53 constellation Aquila 53 Earthlike 53 permanently shadowed craters 53 meridional flow 53 ionise 53 elongated orbit 53 weak gravitational lensing 53 interstellar molecules 52 Ulysses spacecraft 52 star Fomalhaut 52 iridium layer 52 Puppis 52 heavily cratered 52 constellation Cygnus 52 Martian meteorite 52 superfluid 52 Nasa spacecraft 52 Delta Cephei 52 atoms 52 gamma ray 52 Voyager probes 52 star Beta Pictoris 52 CoRoT 52 cosmic collisions 52 Magellanic Stream 52 heliopause 52 spiral nebulae 52 cosmic strings 52 Quadrantids 52 auroral activity 52 meteors 52 SOHO spacecraft 52 spectroscopically 52 nebulosity 52 meteorites 52 superheavy elements 52 highly elliptical orbits 52 XMM Newton satellite 52 circumstellar dust 52 gravitational tug 52 organic molecules 52 asteroids orbiting 52 foreground galaxy 52 Mpc 52 gamma ray observatory 52 cosmic microwave radiation 52 ray Space Telescope 52 SIRTF 52 sunspot 52 asteroid collisions 52 noble gases 52 Tempel 1 52 Adam Riess 52 Herbig Ae Be 52 carbon cenospheres 52 Earth ionosphere 52 Globular clusters 52 Helix nebula 52 baryon 52 dust enshrouded 52 Einstein relativity theory 52 Pulsars 52 habitable zones 52 V# Puppis 52 tholins 52 atomic particles 52 inner moons 52 supergiants 52 intracluster 52 Veil Nebula 52 Tunguska Event 52 Tunguska Siberia 52 antineutrinos 52 alpha particles 52 baryons 52 Neil Gehrels 52 crystalline silicates 52 sulfur isotope 52 proton proton 52 planets asteroids 52 J#.# [001] 52 comet Tempel Tuttle 52 OGLE TR 52 Alycia Weinberger 52 Elliptical galaxies 52 gravitational wave 52 Comet #P/Holmes 52 prominences 52 anomalous cosmic rays 52 electron neutrino 52 comet dust 52 supernova remnant Cassiopeia 52 Alfven waves 52 Gamma ray burst 52 supervolcanoes 52 moon Mab 52 nebula NGC 52 pyroclastic flow 52 NEAs 52 Pleiades cluster 52 X ray photons 52 B meson 52 Leonids 52 antiparticle 52 solar prominences 52 spectroscopic observations 52 MG J# +# 52 starbursts 52 SCP #F# 52 #P/Holmes 52 deuterium 52 constellation Cetus 52 Permian Triassic extinction 52 basaltic rocks 52 orbiting observatories 52 outer corona 52 supervolcano 52 Gliese 51 ferric oxides 51 filaments 51 astrophysical objects 51 Jupiter gravitational pull 51 Nibiru 51 Astronomers 51 Permian Period 51 lavas 51 WIMPs 51 earthlike planets 51 outermost planets 51 molten magma 51 ionized gases 51 infrared wavelengths 51 mass extinction 51 muon 51 particles WIMPs 51 eclipsing binaries 51 Crab Pulsar 51 HiRISE image 51 sunspot cluster 51 extrasolar planets orbiting 51 spiral galaxy Messier 51 micrometeoroids 51 occultation 51 Martian meteorites 51 oscillations 51 Yellowstone supervolcano 51 SN #ha 51 constellation Andromeda 51 Viking landers 51 particle colliders 51 mineral olivine 51 gravitational lenses 51 astrophysical phenomena 51 Supernovas 51 proto planetary disks 51 ALH# 51 protons 51 Cumbre Vieja 51 HAT P 51 SN #cr 51 cosmic 51 sulfate aerosol 51 universe 51 vortices 51 sunspots 51 Gravitational lensing 51 muon neutrino 51 flyby spacecraft 51 WMAP 51 ionised 51 cosmic magnifying glass 51 comet orbit 51 volcanic eruptions 51 Noachian era 51 Einstein cosmological constant 51 coronal heating 51 spherical shell 51 Bose Einstein condensation 51 asteroid Vesta 51 Hesperian epoch 51 Romulan homeworld 51 Planck telescope 51 photochemical reactions 51 Galaxies 51 Spitzer infrared spectrograph 51 perihelion 51 redshifts 51 silicate mantle 51 chondritic meteorites 51 Syrtis Major 51 Coronal Mass Ejections CMEs 51 reionization epoch 51 HD# [005] 51 constellation Eridanus 51 Lyman alpha 51 hydrated minerals 51 cosmologists 51 nova 51 elliptical orbits 51 Earth magnetotail 51 gamma ray photons 51 interstellar particles 51 Seyfert galaxies 51 TrES 51 Saturn moons 51 post perovskite 51 colloidal crystals 51 BLG #L 51 planetary transits