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(Click for frequent words.) 77 protoplanetary disk 73 accretion disk 72 red supergiant 72 protostars 72 galactic disk 71 circumstellar disk 71 blue supergiant 71 galaxies 71 supernova explosion 71 magnetar 70 neutron star 69 dwarf galaxy 69 nebular 69 supermassive black holes 69 Neutron stars 69 planetary nebula 69 brown dwarfs 69 WASP #b 69 planet orbits 69 galaxy cluster 69 interstellar clouds 68 gravitationally bound 68 infall 68 Eta Carinae 68 elliptical galaxy 68 Beta Pictoris 68 planetary nebulae 68 nebula 67 galaxy clusters 67 supernova remnant 67 planetesimals 67 interstellar medium 67 merging galaxies 67 solar nebula 67 Wolf Rayet star 67 AB Aurigae 67 quasar 67 stellar nurseries 67 elliptical galaxies 67 interstellar cloud 67 GQ Lupi 67 gravitationally 67 starburst galaxy 67 Epsilon Eridani 67 starburst galaxies 67 brown dwarf 67 AGNs 67 supermassive black hole 66 supernova remnants 66 supernova explosions 66 X ray emission 66 supernova 66 protoplanetary disks 66 supernovae 66 HL Tau 66 millisecond pulsar 66 Wolf Rayet stars 66 accretion disks 66 galaxy formation 66 Planetary nebulae 66 circumstellar disks 66 eclipsing binary 66 X ray binaries 65 nucleosynthesis 65 circumstellar 65 protoplanet 65 SN #A 65 X ray binary 65 globulars 65 globular cluster 65 infalling gas 65 Upsilon Andromedae 65 RS Ophiuchi 65 protoplanets 65 accreting 65 metallicity 65 spinning neutron 65 SMBH 64 quasars 64 Type Ia supernova 64 dwarf galaxies 64 red supergiants 64 blue straggler 64 type Ia supernova 64 AU Mic 64 chondrules 64 Milky Way Galaxy 64 Milky Way galaxy 64 Supernovae 64 supergiant star 64 active galactic nuclei 64 galaxy 64 runaway thermonuclear 64 protoplanetary discs 64 X ray emitting 63 Milky Way halo 63 Cepheids 63 globular clusters 63 Carina Nebula 63 distant galaxy 63 BP Psc 63 sunlike star 63 R Coronae Borealis 63 constellation Cassiopeia 63 galaxy NGC 63 Supernova #A 63 sodium atoms 63 Virgo cluster 63 planets orbits 63 supermassive 63 infalling 63 substorm 63 microquasar 63 SN #gy 63 Fomalhaut b 63 ionized gas 63 gravitational interaction 63 Type Ia supernovae 63 distant galaxies 63 Pegasi 63 VY Canis Majoris 63 Hot Jupiters 63 pulsar 63 ULIRGs 62 galactic bulge 62 planet HD #b 62 Triangulum 62 supernovas 62 exoplanets orbiting 62 Type 1a supernovae 62 galaxy M# [002] 62 Red Rectangle 62 silicate dust 62 magnetospheric 62 spiral galaxies 62 gamma ray emission 62 gravitational interactions 62 BP Piscium 62 constellation Hercules 62 extrasolar 62 proplyds 62 relativistic particles 62 emission nebula 62 rocky planets 62 gravitational radiation 62 Orion nebula 62 magnetic reconnection 62 rotating neutron 62 Sagittarius B2 62 J# +# [002] 62 ejecta 61 HM Cancri 61 HD #b [002] 61 V# Sgr 61 Milky Way 61 planet orbiting 61 elliptical galaxy NGC 61 galactic mergers 61 constellation Aquarius 61 planets moons 61 atomic nuclei 61 type Ia supernovae 61 HD#b 61 planets orbiting distant 61 SN#A 61 chromosphere 61 reflection nebula 61 terrestrial planets 61 Hanny Voorwerp 61 protoplanetary 61 SN #C 61 neutron stars 61 galaxy M# [001] 61 elongated orbits 61 galaxies collide 61 planemos 61 neutralinos 61 spiral galaxy 61 XTE J# 61 spherically symmetric 61 TrES 4 61 blazar 61 star Gliese 61 millisecond pulsars 61 galactic cosmic rays 60 photosphere 60 Arches Cluster 60 magnetars 60 exoplanet orbiting 60 Andromeda galaxy 60 dense clumps 60 nuclei 60 Coma Cluster 60 colliding galaxies 60 interstellar dust clouds 60 maser emission 60 GeV 60 GJ #b [002] 60 gamma ray burst 60 Eridani 60 baryonic 60 V# Mon 60 helium atoms 60 Virgo Cluster 60 Antennae Galaxies 60 rotating neutron stars 60 velocity dispersion 60 Zeta Ophiuchi 60 proto galaxies 60 energetic electrons 60 eccentric orbits 60 GRBs 60 Henize #-# 60 solar corona 60 Large Magellanic Cloud 60 planets circling 60 Crab Nebula 60 planets 60 Oort Cloud 60 cluster NGC 60 observable universe 60 lensing galaxy 60 Orion Nebula 60 Beta Pictoris b 60 magma ocean 60 Bok globules 60 spherical halo 60 W boson 60 Betelgeuse 60 HD# [002] 60 intrinsic brightness 60 Type Ia 60 constellation Virgo 60 thermonuclear reactions 60 moons orbiting 60 giant elliptical galaxy 60 Eagle Nebula 59 GJ#b 59 supermassive stars 59 sunlike stars 59 blazars 59 HAT P 59 reionization 59 gravitational attraction 59 G#.# +#.# 59 Cancri 59 GRB #B 59 galactic halo 59 Bug Nebula 59 CoRoT 7b 59 luminosities 59 constellation Centaurus 59 X ray pulses 59 ionised gas 59 nebulae 59 active galactic nucleus 59 high redshift galaxies 59 distant quasar 59 redshift 59 filamentary structures 59 emit X rays 59 particle acceleration 59 Bullet Cluster 59 corona 59 extragalactic 59 luminous galaxies 59 Tauri Sb 59 Epsilon Aurigae 59 supernova SN 59 ionised 59 GJ #b [001] 59 filamentary structure 59 subatomic particle 59 gaseous planet 59 Oort cloud 59 Gravitational waves 59 superdense 59 X ray wavelengths 59 hot Jupiters 59 magnetosphere 59 distant supernovae 59 Comet Holmes 59 zodiacal dust 59 supergiant stars 59 giant elliptical galaxies 58 transiting planet 58 asteroidal 58 KBOs 58 Proxima Centauri 58 magnetotail 58 SMBHs 58 relativistic jets 58 moonlet 58 Rosette Nebula 58 icy moons 58 GRB# 58 trans Neptunian objects 58 Kuiper belt 58 constellation Sagittarius 58 novae 58 galactic clusters 58 exoplanetary 58 gravitational microlensing 58 vortices 58 supernovae explosions 58 relativistic protons 58 Fornax cluster 58 ionized hydrogen 58 moonlets 58 Bose Einstein Condensate 58 radial velocity 58 electrons orbiting 58 Type Ia supernovas 58 polaritons 58 Kepler #b 58 Earthlike planets 58 Trifid Nebula 58 cosmological distances 58 Andromeda Galaxy 58 Cepheid variable 58 constellation Ursa Major 58 highly magnetized neutron 58 helium nuclei 58 redshifted 58 PSR J# 58 proto cluster 58 distant quasars 58 RS Oph 58 exosphere 58 constellation Carina 58 post perovskite 58 Small Magellanic Cloud 58 gamma rays 58 Corot 9b 58 PSR B# +# 58 Gal Yam 58 IRC +# 58 Saturn rings 58 supergiant 58 planetesimal 58 CoRoT #b 58 pulsars 58 barred spiral galaxy 58 strange quark 58 rotational axis 57 exoplanet 57 Cygnus X 57 magnetic fields 57 energetic gamma rays 57 Omega Centauri 57 foreground galaxy 57 gamma ray bursts 57 globular star 57 orbiting planets 57 exo planets 57 Saturn magnetosphere 57 weakly interacting 57 torus 57 SNe Ia 57 Carina constellation 57 gamma rays emitted 57 dynamical evolution 57 interstellar dust 57 Crab Pulsar 57 TrES 57 infalling matter 57 GRB # 57 silicon monoxide 57 brightest supernova 57 Kuiper Belt object 57 proto planetary disk 57 spiral galaxy NGC 57 VLTI 57 Jupiter moon Io 57 IRAS #-# 57 gaseous envelope 57 outer layers 57 RX J# 57 collisional 57 Kuiper belt objects 57 ionize 57 IRAS 4B 57 hypervelocity stars 57 filamentary 57 Cat Paw Nebula 57 Tarantula Nebula 57 interacting galaxies 57 PZ Tel 57 atoms 57 Bose Einstein condensate 57 Wolszczan 57 oppositely directed 57 transiting planets 57 hydrogen nuclei 57 hypernova 57 intracluster 57 superfluid 57 Gamma ray bursts 57 moon Enceladus 57 X ray telescopes 57 planets orbiting 57 comets orbiting 57 exoplanets 57 Churyumov Gerasimenko 57 baryon 57 super Earths 57 gravitational 57 cosmic cannibal 57 Magnetars 57 Kuiper Belt objects 57 Magellanic Clouds 56 ionise 56 planet WASP #b 56 Earths orbiting 56 planet Gliese #c 56 NGC# 56 Cancri e 56 constellation Cetus 56 dynamical 56 muon neutrinos 56 lunar crust 56 muons 56 Lagoon Nebula 56 dusty disks 56 brightnesses 56 superdense neutron star 56 Butterfly Nebula 56 RXTE 56 hydrogen helium 56 spacetime 56 Type 1a supernova 56 antiprotons 56 HIP #b 56 spinning pulsar 56 comet nucleus 56 gamma ray radiation 56 Chi Cygni 56 galaxy NGC# 56 nucleobases 56 quark gluon plasma 56 Gamma rays 56 magnetic flux 56 redshifts 56 occultations 56 inner asteroid belt 56 planetary embryos 56 gravity warps 56 Orion constellation 56 spheroidal 56 electroweak 56 hydrogen atoms 56 Pluto Charon 56 muon 56 extrasolar planet 56 coronal mass ejections CMEs 56 Cepheid variables 56 ultraviolet photons 56 celestial sphere 56 constellation Ophiuchus 56 constellation Andromeda 56 galactic cores 56 ESO PR 56 circular orbits 56 wavefunction 56 nucleon 56 spectroscopically 56 star Beta Pictoris 56 Stephan Quintet 56 retrograde orbit 56 antiparticle 56 moon Io 55 CoRoT 55 quasicrystal 55 Higgs bosons 55 Crab pulsar 55 Kuiper Belt Objects 55 cosmic ray particles 55 exciton 55 jovian 55 ionized particles 55 Alfven waves 55 afterglows 55 proto planetary disks 55 radioactive decay 55 planet transits 55 Spitzer infrared spectrograph 55 baryons 55 PSR J# +# 55 T Tauri 55 silicate crystals 55 planets comets 55 habitable zones 55 Fermi telescope 55 Scorpii 55 Trapezium 55 HD# [005] 55 YORP effect 55 Alfvén waves 55 quantum particle 55 nucleons 55 comet tail 55 Jupiter magnetosphere 55 masers 55 hadrons 55 polar vortex 55 planetary orbits 55 ionizes 55 extrasolar planets 55 sized planets orbiting 55 Earth magnetosphere 55 Geminga 55 heliosphere 55 dipole moment 55 Gliese #e 55 molten magma 55 Gliese #c 55 Carinae 55 mu Arae 55 Voorwerp 55 constellation Scorpius 55 spinning neutron stars 55 z = 55 binary asteroid 55 BLG #L 55 transiting exoplanet 55 coronagraph 55 photons emitted 55 colloidal crystals 55 spicules 55 Trifid 55 Mandushev 55 constellation Perseus 55 Enceladus 55 nanobubbles 55 galactic magnetic 55 celestial object 55 moon Mimas 55 protoplanetary disc 55 KH #D 55 gibbous 55 exosolar planets 55 antihelium 4 55 inhomogeneous 55 supersolid 55 Galactic cosmic rays 55 B mesons 55 outermost planets 55 SN #E 55 highly collimated 55 dwarf spheroidal 54 HII regions 54 heliosheath 54 fermion 54 Andromeda halo 54 gaseous planets 54 pions 54 asterism 54 BLG #Lb 54 Epsilon Indi 54 gamma ray flares 54 polariton 54 Gliese #d 54 γ 54 Gliese #g 54 Helix Nebula 54 orbits 54 Galilean moons 54 chemical abundances 54 filaments 54 NGC #A 54 emits X rays 54 angular momentum 54 asteroseismology 54 Hawking radiation 54 subsurface ocean 54 mesosphere 54 dipolar 54 deuterium 54 P/# A2 54 Venusian atmosphere 54 branes 54 spatially resolved 54 positrons 54 Earth radii 54 Saturn outermost ring 54 ringed planet 54 Hubble observations 54 axions 54 Evolution Explorer 54 aerosol particles 54 gravitational tug 54 Tarantula nebula 54 thermonuclear explosion 54 SNR #-#.# 54 Coma cluster 54 excitons 54 R#a# 54 elongated orbit 54 constellation Lyra 54 helium atom 54 Kepler 9c 54 Rydberg atom 54 convective 54 ESO VLT 54 Konacki 54 gravitational lens 54 tidal bulge 54 innermost planet 54 gravitational waves 54 X ray Observatory 54 Fomalhaut 54 stellar occultation 54 lowermost mantle 54 constellation Pegasus 54 comet Tempel Tuttle 54 cosmic microwave background 54 sterile neutrino 54 ionized gases 54 habitable planets 54 XMM Newton 54 electrons protons 54 orbitals 54 gravitational tides 54 spectral measurements 54 Type Ib 54 Corot 7b 54 Sagittarius dwarf galaxy 54 nanomotors 54 sun corona 54 cosmic rays 54 arcminutes 54 GALEX 54 surface plasmon 54 magnetic dynamo 54 orbits Saturn 54 submillimeter galaxies 54 distant galaxy clusters 54 neutrino 54 stellar seismology 54 J#.# [001] 54 noctilucent clouds 54 bosonic 54 Perseus Cluster 54 numerical simulations 54 coronal mass ejection 54 outer corona 54 electron volt 54 z ~ 54 crystalline silicates 54 excitations 54 tidal tails 54 linearly polarized 54 dust enshrouded 54 COROT 53 Puppis 53 SNe 53 Gaensler 53 Pleiades cluster 53 Triangulum Galaxy 53 VHE gamma rays 53 UV photons 53 kaons 53 suns 53 planets orbiting sun 53 gravitational tugs 53 Iapetus 53 ultracold atoms 53 substorms 53 mantle plumes 53 MG J# +# 53 photoionization 53 prominences 53 ultradense 53 thermonuclear fusion 53 fainter objects 53 cosmic ray protons 53 Lyman alpha 53 coronal loop 53 ultracold gas 53 Phaethon 53 glows brightly 53 Delta Cephei 53 RHESSI 53 Saturnian moon 53 impactors 53 Mott insulator 53 kpc 53 electron orbits 53 quantum tunneling 53 attosecond 53 diffraction pattern 53 unpolarized 53 optical wavelengths 53 electron positron pairs 53 spectroscopic 53 hadron 53 radial velocity technique 53 #gy 53 quasiparticle 53 CAIs 53 toroid 53 coronal heating 53 meteoritic material 53 neutrons 53 X ray observatories 53 millimeter wavelength 53 carbonaceous chondrites 53 radiative cooling 53 planet magnetosphere 53 photon energies 53 helium ions 53 extrasolar planets orbiting 53 globular cluster M# 53 astrophysical objects 53 electron neutrinos 53 atomic nucleus 53 Fermi LAT 53 astronomers 53 earthlike planets 53 magnetic monopoles 53 sterile neutrinos 53 tau neutrinos 53 macroscopically 53 extrasolar planetary systems 53 Gondolo 53 electron density 53 exo planet 53 prograde 53 Aurigae 53 Maunder minimum 53 mesons 53 star Proxima Centauri 53 MeV 53 supersymmetric particles 53 gravitational lensing 53 Supergiant 53 gravitational wobble 53 CMEs 53 Doradus 53 tidally 53 comet McNaught 53 pseudogap 53 constellation Auriga 53 stellar occultations 53 occulted 53 orbital resonance 53 gamma ray observatory 53 nebula NGC 53 vibrational modes 53 ultracold molecules 53 anisotropy 53 RY Sagittarii 53 constellation Aries 53 Galaxy Evolution 53 Seyfert galaxies 53 carbonaceous chondrite 53 icy comets 53 astrophysical phenomena 53 gravitons 53 shorter wavelengths 53 Kuiper belt object 53 photoemission 53 SMM J# 53 W bosons 53 galactic nuclei 53 particles WIMPs 53 nebulosity 53 Keck Interferometer 53 porphyrin 53 Globular clusters 53 hydrogen atom 53 ionized 53 Cosmic Microwave Background 53 Astrophysicists 53 gamma ray photons 53 highly elliptical orbits 53 planet gravitational tug 53 photochemical reactions 53 supernova remnant Cassiopeia 53 neutrino particles 52 interstellar dust grains 52 planets orbiting stars 52 planet TrES 52 comet 52 deuterium atoms 52 manganese atoms 52 outermost layers 52 Mpc 52 antiparallel 52 novas 52 Solar System 52 CoRoT 9b 52 cosmic strings 52 lithosphere 52 constellation Leo 52 Saturn moons 52 Tau Ceti 52 constellation Taurus 52 WIMPs 52 convection 52 silicates 52 boson 52 TGFs 52 nitrogen atoms 52 meteoroids 52 ESA XMM Newton 52 gravitational slingshot 52 interstellar particles 52 magnetopause 52 phonons 52 auroral 52 precessing 52 superluminal 52 extrasolar planetary 52 Gravitational lensing 52 planet Uranus 52 gaseous 52 IBEX spacecraft 52 antimatter particles 52 SN #D 52 #P/Churyumov-Gerasimenko 52 OGLE TR 52 Earth ionosphere 52 CMB photons 52 delocalized 52 astrophysical 52 Pulsars 52 oxygen atoms 52 Upsilon Andromedae b 52 ultraviolet wavelengths 52 electron positron 52 crystal lattices 52 binary quasar 52 spectroscopic observations 52 spirals inward 52 Active Galactic Nuclei 52 colliding protons 52 optical resonator 52 carbonate minerals 52 Camelopardalis 52 astrophysicists 52 Cosmologists 52 Cosmic rays 52 interstellar space 52 RMC #a 52 OGLE TR #b 52 comets 52 cosmic ray 52 Doppler shifts 52 cometary material 52 Super Earths 52 Magellanic Stream 52 supercontinent 52 Tycho supernova remnant 52 Saturn outermost 52 distant supernovas 52 proton 52 galactic collisions 52 rubidium atoms 52 organic molecules 52 lithium atoms 52 potassium atoms 52 constellation Coma Berenices 52 binary asteroids 52 constellation Draco 52 outermost planet 52 RRATs 52 asteroids comets 52 constellation Gemini 52 cometary debris 52 axion 52 constellation Puppis 52 tholins 52 Earth magnetotail 52 dimers 52 particles 52 starquakes 52 eclipsing binaries 52 X ray observatory 52 plasmon 52 Trojan asteroids 52 icosahedral 52 martensite 52 antiparticles 52 plasmasphere 52 tetrahedron 52 airglow 52 planetary nebulas 52 dwarf spheroidal galaxies 52 oxygen ions 52 valence electron 52 Spitzer Space Telescope 52 moon Ganymede 52 trimers 52 WMAP satellite 52 gravitational wave 52 matter antimatter asymmetry 52 cosmic dust 52 neutralino 52 Super Kamiokande 52 CoRoT satellite 52 Gliese 52 superstrings 52 constellation Eridanus 52 Anisotropy Probe 52 spacecraft flyby 52 inhabitable planets 52 solitons 52 dusty cocoons 52 evanescent waves 52 liquid droplets 52 keV 52 xenon ions 52 fermions 52 Dumbbell Nebula 52 spectra 51 faintest galaxies 51 circumstellar dust 51 phosphorus atom 51 spectroscopic analysis 51 topological defects 51 volcanic moon Io 51 diffracted 51 Romulan homeworld 51 particle detectors 51 crustal rocks 51 optical spectra 51 photosystem 51 exoplanets planets 51 primitive meteorites 51 dense neutron stars 51 planets asteroids 51 Bose Einstein condensates 51 ellipsoids 51 Toutatis 51 chondrites 51 gravitational perturbations 51 microlensing events 51 orbital angular momentum 51 magnetization 51 Type Ic supernova 51 crystallites 51 Quadrantid 51 Phoebe orbits 51 photons 51 arcsec 51 neutrinos 51 photometer 51 decoherence 51 occultation 51 photoluminescence 51 alpha particles 51 Cepheus 51 bilayer graphene 51 inner Oort Cloud 51 galactic 51 Neutrons 51 orbited Jupiter 51 thermosphere 51 antihelium 51 arcseconds 51 hydrogens 51 Comet Tempel Tuttle 51 electron pairs 51 gravitational tidal 51 gravitational acceleration 51 planetoid 51 antiferromagnets 51 dimensional electron 51 SDSS II 51 Quadrantid meteor shower 51 southern constellation Carina 51 Comet Halley 51 Astronomers 51 nucleate 51 atomic particles 51 Galileo spacecraft 51 particle colliders 51 martian atmosphere 51 metastable 51 chlorophyll molecules 51 Higgs singlet 51 bosons 51 VB #b 51 coronal holes 51 permanently shadowed craters 51 positronium 51 Particle acceleration 51 star Fomalhaut 51 chlorine monoxide 51 GPa 51 Peony nebula star 51 sundog 51 AUs 51 elliptical orbits 51 perihelion 51 superfluids 51 antiproton 51 solar radii