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(Click for frequent words.) 81 neutron star 76 galaxies 73 supernovae 72 supermassive black holes 72 galaxy clusters 72 pulsars 72 quasars 71 elliptical galaxies 71 active galactic nuclei 71 dwarf galaxy 70 supernova explosions 70 GRBs 70 dwarf galaxies 70 globular clusters 70 supernova explosion 69 gamma ray bursts 69 pulsar 69 colliding galaxies 68 magnetar 68 starburst galaxies 67 accretion disk 67 Milky Way galaxy 67 brown dwarfs 67 supernovas 67 supermassive black hole 67 distant galaxies 67 globular cluster 67 supernova remnants 66 merging galaxies 66 spiral galaxies 66 subatomic particles 66 atomic nuclei 66 X ray emission 66 supernova 66 Neutron stars 66 gravitational waves 66 rocky planets 65 magnetars 65 elliptical galaxy 65 quasar 65 AGNs 65 galaxies collide 65 gravitational interactions 64 protostars 64 planetary nebulae 64 accretion disks 64 millisecond pulsars 64 gamma ray burst 64 SN #A 64 globulars 64 supermassive 64 X ray binary 64 Eta Carinae 63 galaxy 63 SN #gy 63 galaxy formation 63 distant galaxy 63 planets 63 quark gluon plasma 63 blazars 63 gravitationally bound 63 luminous galaxies 63 Type Ia supernova 63 Milky Way Galaxy 62 hot Jupiters 62 planetesimals 62 astrophysical 62 protoplanetary disk 62 red supergiant 62 gravitational radiation 62 protoplanetary disks 62 proto galaxies 62 nuclei 62 Milky Way 62 solar nebula 62 brown dwarf 61 millisecond pulsar 61 Gravitational waves 61 galactic mergers 61 terrestrial planets 61 circumstellar 61 SMBH 61 interstellar clouds 61 starburst galaxy 61 protostar 61 antimatter particles 61 nebula 61 gamma rays 61 interstellar medium 60 nebulae 60 comets 60 type Ia supernovae 60 novae 60 galaxy cluster 60 gravitationally 60 atoms 60 planetary nebula 60 hypervelocity stars 60 protoplanets 60 WASP #b 60 ejecta 60 Andromeda galaxy 60 red supergiants 60 Henize #-# 60 nucleosynthesis 60 Milky Way halo 60 Andromeda Galaxy 60 infall 60 microquasar 60 galactic clusters 59 Type Ia supernovae 59 accreting 59 ULIRGs 59 spacetime 59 distant quasars 59 X ray wavelengths 59 stellar nurseries 59 galactic collisions 59 X ray telescopes 59 neutralinos 59 type Ia supernova 59 supergiant star 59 galactic disk 59 Gamma ray bursts 59 Hawking radiation 59 nebular 59 exoplanets 59 atomic particles 59 rotating neutron stars 59 Bullet Cluster 59 magnetic fields 59 Antennae Galaxies 59 exoplanet 59 galactic halo 59 astronomers 59 blue supergiant 59 chondrules 58 WIMPs 58 RS Ophiuchi 58 Wolf Rayet star 58 metallicity 58 Type Ia 58 supermassive stars 58 Virgo cluster 58 eclipsing binary 58 Supernovae 58 galactic cores 58 planets orbiting 58 neutrons 58 Kuiper belt 58 GRB # 58 X ray Observatory 58 HM Cancri 58 magnetic monopoles 58 blue straggler 58 protons 58 planets moons 58 Hot Jupiters 58 supernova remnant 58 dense neutron stars 58 super Earths 57 supernovae explosions 57 Beta Pictoris b 57 protoplanet 57 KBOs 57 extrasolar planets 57 Earthlike planets 57 Kuiper belt objects 57 cosmic rays 57 Orion Nebula 57 AB Aurigae 57 giant elliptical galaxies 57 sunlike stars 57 planetary embryos 57 Large Magellanic Cloud 57 electroweak 57 Epsilon Eridani 57 relativistic jets 57 Higgs bosons 57 Type 1a supernovae 57 astrophysicists 57 distant supernovae 57 Magnetars 57 coronal mass ejections 56 HD #b [002] 56 redshift 56 extrasolar 56 transiting planets 56 eccentric orbits 56 baryonic 56 planemos 56 planet orbiting 56 hypernova 56 neutrinos 56 cosmic microwave background 56 spiral galaxy 56 reionization 56 positrons 56 ionized gas 56 X ray binaries 56 Solar System 56 gamma ray emission 56 planet orbits 56 W boson 56 superfluid 56 exoplanetary 56 SMBHs 56 interacting galaxies 56 planets orbits 56 Wolf Rayet stars 56 gaseous planet 56 comet 56 antiprotons 56 blazar 56 Red Rectangle 56 planet HD #b 56 Cepheids 56 giant elliptical galaxy 56 baryons 56 Type Ia supernovas 56 supersymmetric 56 spherically symmetric 56 magnetosphere 56 galaxy NGC 56 gravitational lensing 56 lensing galaxy 56 subatomic 56 supersymmetric particles 56 neutrino 56 gravitational lenses 56 galaxy M# [002] 55 Geminga 55 solar flares 55 afterglows 55 fermions 55 active galactic nucleus 55 interstellar cloud 55 comet nucleus 55 Upsilon Andromedae 55 X ray pulses 55 SN#A 55 axions 55 astronomical objects 55 excitons 55 strangelets 55 relativistic particles 55 Big Bang 55 globular star 55 runaway thermonuclear 55 CMEs 55 icy moons 55 electron neutrinos 55 interstellar dust 55 infalling 55 gaseous planets 55 Arches Cluster 55 magnetic reconnection 55 exoplanets orbiting 55 circumstellar disks 55 moonlets 55 Pulsars 55 HD#b 55 electrons 55 Higgs particle 55 sodium atoms 55 Hanny Voorwerp 55 photons 55 Virgo Cluster 55 redshifts 55 astrophysical objects 55 constellation Cassiopeia 55 Alfven waves 55 general relativity 55 BP Psc 54 Earth magnetosphere 54 HII regions 54 cosmic phenomena 54 Epsilon Aurigae 54 submillimeter galaxies 54 Active Galactic Nuclei 54 cosmological distances 54 planetesimal 54 Bose Einstein condensates 54 meteoroids 54 sunlike star 54 habitable planets 54 subatomic particle 54 protoplanetary 54 faint galaxies 54 planet WASP #b 54 XTE J# 54 J# +# [002] 54 solitons 54 Saturn rings 54 gravitational tides 54 helium atoms 54 kaons 54 muon neutrino 54 dynamical evolution 54 galactic nuclei 54 Small Magellanic Cloud 54 proplyds 54 elongated orbits 54 Astronomers 54 phonons 54 fainter objects 54 RS Oph 54 chemical abundances 54 TrES 4 54 hydrogen nuclei 54 supergiant stars 54 astrophysical phenomena 54 GeV 54 superdense 54 observable universe 54 cosmic ray collisions 54 baryon 54 dynamical 54 antineutrinos 54 atomic nucleus 54 gravitational wave 54 cosmological theories 54 GJ #b [002] 54 emits X rays 54 interstellar dust clouds 54 X ray observatories 53 SN #C 53 auroras 53 Alfvén waves 53 retrograde orbit 53 photosphere 53 quantum gravity 53 Oort Cloud 53 Beta Pictoris 53 planets orbiting stars 53 Cosmic rays 53 antimatter 53 radioactive decay 53 asteroids 53 Hubble observations 53 collisional 53 cosmologists 53 Cosmologists 53 filamentary structure 53 gravitational 53 hadrons 53 particle accelerators 53 asteroids comets 53 constellation Hercules 53 pions 53 polaritons 53 AU Mic 53 planetary orbits 53 substorms 53 retrograde orbits 53 weakly interacting 53 galaxy M# [001] 53 Globular clusters 53 constellation Virgo 53 Elliptical galaxies 53 binary asteroid 53 singularities 53 extragalactic 53 energetic electrons 53 orbits 53 exoplanet orbiting 53 high temperature superconductivity 53 cosmic ray particles 53 Kuiper Belt objects 53 GJ #b [001] 53 Supermassive black 53 shorter wavelengths 53 coronal mass ejections CMEs 53 Gamma rays 53 PSR J# 53 faraway galaxies 53 Seyfert galaxies 53 proton 53 luminosities 53 Planetary nebulae 53 Saturn magnetosphere 53 SUSY 53 alpha particles 53 particles 53 oppositely directed 53 vortices 53 Bok globules 52 neighboring Andromeda galaxy 52 superfluids 52 Muons 52 helium nuclei 52 Carina Nebula 52 magnetospheric 52 radial velocity 52 spinning neutron stars 52 GRB #B 52 SN #E 52 Omega Centauri 52 Astrophysicists 52 habitable zones 52 proto planetary disks 52 nucleon 52 particle beams 52 Kuiper Belt Objects 52 Bose Einstein condensate 52 celestial bodies 52 optical telescopes 52 gravitational tugs 52 axion 52 quarks 52 exciton 52 galactic cosmic rays 52 distant quasar 52 RHIC 52 Trojan asteroids 52 particles WIMPs 52 nucleons 52 X ray emitting 52 Fornax cluster 52 Crab Nebula 52 Wolszczan 52 gravitational microlensing 52 Martian meteorites 52 circular orbits 52 inhabitable planets 52 Dwarf galaxies 52 electron 52 Galilean moons 52 solar corona 52 NASA Chandra 52 energetic gamma rays 52 corona 52 magma ocean 52 sterile neutrino 52 extrasolar planetary systems 52 VY Canis Majoris 52 extrasolar planet 52 bosons 52 protoplanetary discs 52 comets orbiting 52 hydrogen atoms 52 Earthlike planet 52 Venusian atmosphere 52 highly magnetized neutron 52 SN #D 52 infalling gas 52 colliding protons 52 bosonic 52 V# Mon 52 ionized hydrogen 52 galactic 52 quanta 52 Type 1a supernova 52 mesons 52 transiting planet 52 Earthlike 52 nebulas 52 sized planets orbiting 52 antiparticles 52 ultraviolet wavelengths 52 GJ#b 52 planets circling 52 planets comets 52 phyllosilicates 52 galactic bulge 52 auroral 52 holes subatomic versions 52 ionized gases 52 Kepler #b 52 antiparticle 52 muon neutrinos 52 circumstellar disk 52 dense clumps 52 Sagittarius dwarf galaxy 52 PSR B# +# 52 Gliese #d 52 planets orbiting distant 52 impactors 52 hydrogen helium 51 intrinsic brightness 51 emit X rays 51 magnetospheres 51 R#a# 51 Lyman alpha 51 CoRoT 7b 51 Magellanic Clouds 51 Cosmic Microwave Background CMB 51 substorm 51 boson 51 superconductivity 51 tidal tails 51 brightest supernova 51 carbonaceous chondrites 51 jovian 51 XMM Newton 51 Gal Yam 51 particle acceleration 51 muon 51 CAIs 51 relativistic protons 51 quasiparticles 51 Coma Cluster 51 cosmic particles 51 Supernova #A 51 gravitational attraction 51 quantum mechanical 51 chondrites 51 optical spectra 51 organic molecules 51 Bose Einstein condensation 51 gamma ray bursts GRBs 51 CMB radiation 51 trans Neptunian objects 51 Kazantzidis 51 foreground galaxy 51 Corot 7b 51 NGC# 51 elliptical orbits 51 tau neutrinos 51 Cancri e 51 moon Io 51 RXTE 51 excitations 51 RX J# 51 osmium 51 GQ Lupi 51 thermonuclear reactions 51 cosmic cannibal 51 branes 51 GRB 51 cluster NGC 51 airbursts 51 hydrogen atom 51 sterile neutrinos 51 ultracold 51 cosmic dust 51 cosmic ray 51 Iapetus 51 CoRoT #b 51 infalling matter 51 star Gliese 51 P/# A2 50 superdense neutron star 50 fermion 50 Oort cloud 50 Cygnus X 50 Fomalhaut b 50 exo planets 50 muons 50 interferometers 50 ultraluminous galaxy 50 G#.# +#.# 50 orbitals 50 moons orbiting 50 protons collide 50 barred spiral galaxy 50 Fermi telescope 50 rotating neutron 50 heliosphere 50 superheavy elements 50 Stephan Quintet 50 strange quark 50 rubidium atoms 50 Galactic cosmic rays 50 spiral nebulae 50 Filippenko 50 Cosmic Microwave Background 50 Adam Riess 50 angular momentum 50 cosmological 50 electron positron 50 Earths orbiting 50 filamentary 50 electron neutrino 50 Weakly Interacting Massive Particles 50 constellation Ursa Major 50 quantum mechanically 50 Orion nebula 50 silicate dust 50 spectroscopic measurements 50 meteors 50 supercontinents 50 orbiting planets 50 Pieter van Dokkum 50 planets orbiting sun 50 Gliese #c 50 TGFs 50 Saturn aurora 50 gravitational interaction 50 quantum tunneling 50 gaseous 50 Triangulum Galaxy 50 Solar flares 50 lavas 50 cosmic strings 50 cosmic microwave radiation 50 interferometry 50 noctilucent clouds 50 Pluto Charon 50 starbursts 50 photon 50 carbonate minerals 50 HL Tau 50 proto planetary disk 50 microlensing 50 proto cluster 50 silicates 50 #gy 50 outer layers 50 gravitational pulls 50 infrared wavelengths 50 aurorae 50 exoplanetary systems 50 dwarf spheroidal galaxies 50 antiquarks 50 gamma ray photons 50 Kuiper Belt object 50 outer planets 50 massless particles 50 elliptical galaxy NGC 50 meteoroid 50 Gondolo 50 supersolid 50 Proxima Centauri 50 Enceladus 50 Kuiper Belt 50 redshifted 50 antihydrogen 50 meteorites 50 W bosons 50 masers 50 SNe 50 Leonids 49 high temperature superconductors 49 interstellar dust grains 49 optical wavelengths 49 dirty snowballs 49 quasiparticle 49 baryonic matter 49 Einstein theory 49 suns 49 neutrino mass 49 ESA XMM Newton 49 Komossa 49 Milankovitch cycles 49 stellar seismology 49 Higgs boson 49 ultracold atoms 49 dust enshrouded 49 cometary material 49 celestial object 49 electron positron pairs 49 electron beams 49 high redshift galaxies 49 Jovian moons 49 spheroidal 49 transiting exoplanet 49 strangelet 49 protons electrons 49 Alex Filippenko 49 meteorite impacts 49 galaxy NGC# 49 coronal loops 49 gravity warps 49 icy comets 49 coronal mass ejection 49 BECs 49 Lagoon Nebula 49 Rydberg atoms 49 Spitzer Space Telescope 49 asteroidal 49 chemical reactions 49 neutralino 49 colliders 49 Evolution Explorer 49 gamma ray flares 49 spiral galaxy NGC 49 permanently shadowed craters 49 leptons 49 Trifid Nebula 49 tholins 49 planetoids 49 solar neutrinos 49 gamma rays emitted 49 planet Gliese #c 49 De Pontieu 49 orbiting 49 SNe Ia 49 TrES 49 celestial objects 49 diffraction pattern 49 Eagle Nebula 49 constellation Carina 49 Comet Tempel Tuttle 49 plasmons 49 fermionic 49 SDSS II 49 deuterium 49 Rydberg atom 49 Comet Shoemaker Levy 49 reflection nebula 49 brightnesses 49 stellar occultations 49 magnetic flux 49 highly elliptical orbits 49 asteroid belt 49 Corot 9b 49 spectroscopic 49 energetic cosmic rays 49 primitive meteorites 49 electrons orbiting 49 occultations 49 antiferromagnets 49 lunar crust 49 PSR J# +# 49 Chandra X ray 49 Galilean satellites 49 Comet Holmes 49 fainter 49 Triangulum 49 RHESSI 49 particle detectors 49 blackholes 49 planets astronomers 49 Carina constellation 49 ions 49 emission nebula 49 quantum electrodynamics 49 superstrings 49 holes subatomic 49 electron spins 49 detect gravitational waves 48 wavefunction 48 extrasolar planets orbiting 48 Einstein relativity theory 48 olivine 48 SN #cr 48 XMM Newton observations 48 quasicrystal 48 proton antiproton collisions 48 Doradus 48 gravitational redshift 48 gravitational lens 48 B mesons 48 supersymmetry 48 quark 48 hadron 48 Saturn moons 48 zodiacal dust 48 BP Piscium 48 Konacki 48 interstellar space 48 giant gaseous planets 48 ionized particles 48 constellation Centaurus 48 GRB# 48 Haumea 48 deuterium atoms 48 distant supernovas 48 filaments 48 moon Ganymede 48 rotational axis 48 luminosity 48 auroral displays 48 proton collisions 48 spatial dimensions 48 comets asteroids 48 thermonuclear explosion 48 X ray observatory 48 protoplanetary disc 48 OGLE TR #b 48 periodic oscillations 48 silicon monoxide 48 bolide 48 HD# [002] 48 exo planet 48 CoRoT 9b 48 Jupiter magnetosphere 48 photons emitted 48 comet orbit 48 Saturn auroras 48 silicate mantle 48 celestial phenomena 48 optical interferometry 48 gamma ray 48 Helix Nebula 48 antihydrogen atoms 48 CMB photons 48 Schwarzschild radius 48 star Beta Pictoris 48 spinning pulsar 48 magnetic monopole 48 particle 48 Kuiper belt object 48 GALEX 48 supercontinent 48 Galaxies 48 spherules 48 spicules 48 Late Heavy Bombardment 48 inhomogeneous 48 mantle plumes 48 Astrophysical 48 polar vortex 48 buckyballs 48 Zeta Ophiuchi 48 Cepheid variables 48 asteroid 48 spinning neutron 48 Perseus Cluster 48 plate tectonics 48 superfluidity 48 ionize 48 submillimeter 48 Computer simulations 48 electron electron 48 gravitons 48 Planck 48 photons particles 48 iron pnictides 48 Jupiter moon Io 48 antimatter atoms 48 spectroscopically 48 Gliese #e 48 volcanic moon Io 48 Baptistina 48 RRATs 48 planet magnetosphere 48 surface plasmons 48 coronal heating 48 Ordovician extinction 48 planetary atmospheres 48 electrons behave 48 binary quasar 48 SNR #-#.# 48 prebiotic molecules 48 meteoritic material 48 decoherence 48 mu Arae 48 moonlet 48 spherical halo 48 Tempel 1 48 spectra 48 Cancri 48 WMAP 47 meteor impacts 47 Crab Pulsar 47 SMM J# 47 strange quarks 47 weak gravitational lensing 47 Gliese 47 IRAS 4B 47 VLTI 47 synchrotrons 47 X ray photons 47 sun corona 47 transiting exoplanets 47 Gaensler 47 helium atom 47 B meson 47 WM Keck Observatory 47 cuprates 47 visible wavelengths 47 intracluster 47 gravitational perturbations 47 chondritic meteorites 47 particle physics 47 Type Ic supernovae 47 Saturnian moon 47 UDFy # 47 YORP effect 47 VHE gamma rays 47 relativity theory 47 nucleobases 47 Jupiter Saturn Uranus 47 Neutrinos 47 pnictides 47 God Particle 47 Bug Nebula 47 stony meteorites 47 magnons 47 subatomic versions 47 Earth ionosphere 47 Rosette Nebula 47 earthlike planets 47 supergiants 47 proton decay 47 gravitational tug 47 Mott insulator 47 rubidium vapor 47 COROT 47 superluminal 47 potentially habitable planets 47 Photons 47 TW Hydrae 47 Toutatis 47 millimeter wavelengths 47 distant galaxy clusters 47 electrons protons 47 planetary nebulas 47 planet Uranus 47 fermionic atoms 47 galactic alignment 47 aurora 47 antiproton 47 torus 47 magnetic excitations 47 mesosphere 47 tidally 47 velocities 47 quantum mechanics 47 Einstein cosmological constant 47 R Coronae Borealis 47 Helix nebula 47 abundances 47 galaxy supermassive black 47 presolar grains 47 planetoid 47 binary asteroids 47 Neil Gehrels 47 superclusters 47 dinosaur extinction 47 Wilkinson Microwave Anisotropy Probe 47 ion collisions 47 Keck telescope 47 moons 47 cosmological models 47 nanomagnets 47 constellation Lyra 47 eclipsing binaries 47 microlensing events 47 volcanism 47 Spiral galaxies 47 particle colliders 47 undiscovered particle 47 velocity dispersion 47 supervolcanoes 47 Einstein equations 47 VLBA 47 molten magma 47 submillimeter wavelengths 47 planets asteroids 47 potentially habitable 47 vortexes 47 gluons 47 Richard Mushotzky 47 ultradense 47 meteor 47 SCP #F# 47 planet transits 47 numerical simulations 47 Supernovas 47 proton proton collisions 47 SN #ha 47 entangled quantum 47 van Dokkum 47 solar minima 47 cosmological constant 47 gaseous envelope 47 proton antiproton 47 sulfur isotope 47 XO 3b 46 UCO Lick 46 IRC +# 46 interstellar molecules 46 gluon 46 HD# [005] 46 supernova SN 46 Cat Paw Nebula 46 constellation Vulpecula 46 spherical particles 46 dipole moment 46 atom smashers 46 extrasolar planetary 46 Extrasolar planets 46 magnetotail 46 photochemical reactions 46 dynamical processes 46 Mpc 46 supernovae explode 46 lithium atoms 46 electron pairs 46 MG J# +# 46 quantum entanglement 46 GRB #A 46 Kailash Sahu 46 cesium atoms 46 habitable planet 46 aerosol particles 46 Microlensing 46 cometary 46 Particle physics 46 chlorophyll molecules 46 quantum particle 46 nanocrystals 46 electrons positrons 46 topological insulators 46 diffuse aurora 46 circumstellar dust