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(Click for frequent words.) 75 pulsars 74 neutron star 70 millisecond pulsar 70 magnetar 69 neutron stars 69 quasar 69 supernova explosion 69 supermassive black hole 69 supernova 68 supernovae 68 galaxies 67 gamma ray burst 67 dwarf galaxy 67 supernova remnant 66 X ray emission 66 Eta Carinae 66 millisecond pulsars 66 accretion disk 66 HD#b 66 galaxy cluster 65 supernova remnants 65 WASP #b 64 SN #A 64 quasars 64 galaxy clusters 64 gamma ray bursts 63 Milky Way galaxy 63 planet orbiting 63 nebula 63 brown dwarf 63 supermassive black holes 63 protostar 62 red supergiant 62 supernova explosions 62 distant galaxies 62 PSR J# 62 distant galaxy 62 exoplanets 62 elliptical galaxy 62 galaxy 61 SN #gy 61 globular cluster 61 Andromeda galaxy 61 protoplanetary disk 61 Type Ia supernova 61 dwarf galaxies 61 HD #b [002] 61 Milky Way 61 brown dwarfs 60 sunlike star 60 elliptical galaxies 60 GRB # 60 Epsilon Eridani 60 spiral galaxy 60 magnetars 60 extrasolar planets 60 GRBs 60 exoplanet 60 supernovas 60 interstellar medium 60 Andromeda Galaxy 60 galaxy NGC 59 planet orbits 59 gravitational waves 59 globular clusters 59 gaseous planet 59 microquasar 59 protoplanet 59 Crab Pulsar 59 infall 59 distant supernovae 59 AB Aurigae 59 Milky Way Galaxy 59 X ray binary 59 extrasolar planet 59 type Ia supernova 59 metallicity 59 AGNs 59 gamma rays 59 Large Magellanic Cloud 58 starburst galaxies 58 planetary nebula 58 magnetic fields 58 starburst galaxy 58 eclipsing binary 58 radial velocity 58 blue supergiant 58 astronomers 58 active galactic nuclei 58 protostars 58 XMM Newton 58 planets 58 neutrino 58 Beta Pictoris 58 hypervelocity stars 58 circumstellar disk 58 blazars 58 colliding galaxies 58 planet HD #b 58 Wolf Rayet star 58 Saturn rings 58 gravitational wave 57 solar nebula 57 galaxy M# [002] 57 GQ Lupi 57 observable universe 57 G#.# +#.# 57 ejecta 57 cosmic microwave background 57 accreting 57 exoplanet orbiting 57 BP Psc 57 galactic disk 57 muon 57 HL Tau 57 gravitationally bound 57 supergiant star 57 Orion Nebula 57 rotating neutron 57 cosmic rays 57 Hot Jupiters 57 comet 57 Beta Pictoris b 57 GRB #B 57 redshift 57 Geminga 57 Fomalhaut b 57 X ray telescopes 57 Cygnus X 57 type Ia supernovae 57 spiral galaxies 57 merging galaxies 57 PSR J# +# 56 Crab Nebula 56 substorm 56 Bullet Cluster 56 Virgo cluster 56 planetary nebulae 56 P/# A2 56 HD# [002] 56 PSR B# +# 56 Sedna 56 comet nucleus 56 blazar 56 planets orbiting 56 spacetime 56 Gliese #e 56 gravitationally 56 Type Ia 56 gravitational radiation 56 spinning neutron 56 Hawking radiation 56 Type Ia supernovae 56 GJ #b [002] 56 exoplanets orbiting 56 constellation Virgo 56 cosmic ray 56 Kepler #b 56 gamma ray emission 56 Antennae Galaxies 56 interstellar clouds 56 Gliese #d 56 RS Oph 56 magnetic reconnection 56 planemos 56 positrons 56 subatomic particles 56 RS Ophiuchi 56 Supernova #A 56 circumstellar 56 AU Mic 56 interstellar dust 56 CoRoT 7b 55 neutrinos 55 constellation Cassiopeia 55 terrestrial planets 55 infalling 55 relativistic particles 55 Corot 9b 55 ionized gas 55 distant galaxy clusters 55 gamma ray flares 55 Cepheids 55 distant quasar 55 Cepheid variable 55 RXTE 55 Oort Cloud 55 celestial object 55 gravitational interactions 55 HM Cancri 55 Hanny Voorwerp 55 X ray Observatory 55 Kuiper belt 55 Arches Cluster 55 globulars 55 Milky Way halo 55 RHESSI 55 comets 55 Virgo Cluster 55 planetesimals 55 extrasolar 55 GJ#b 55 rocky planets 55 Cancri e 55 Proxima Centauri 55 magnetospheric 54 planet Uranus 54 planets orbits 54 transiting planets 54 COROT 54 accretion disks 54 Fermi telescope 54 planetoid 54 exoplanetary 54 Earthlike planets 54 emits X rays 54 Upsilon Andromedae 54 star Gliese 54 RRATs 54 rotating neutron stars 54 Alfvén waves 54 X ray pulses 54 moons orbiting 54 Pegasi 54 foreground galaxy 54 TrES 4 54 exo planet 54 retrograde orbit 54 photons 54 distant quasars 54 Cosmic Microwave Background 54 SNR #-#.# 54 SN #C 54 Gravitational waves 54 GJ #b [001] 54 Triangulum Galaxy 54 galactic clusters 54 VY Canis Majoris 54 solar corona 54 superluminal 54 Corot 7b 54 interstellar dust clouds 54 hot Jupiters 54 Gliese #c 54 transiting planet 54 Omega Centauri 54 Kuiper belt objects 54 constellation Hercules 54 microlensing 54 moonlets 54 gravitational lensing 54 Comet Holmes 54 Cancri 53 muons 53 Puppis 53 protoplanetary 53 photon 53 nuclei 53 Lyman alpha 53 elongated orbits 53 novae 53 galaxy M# [001] 53 spinning pulsar 53 lensing galaxy 53 distant supernovas 53 protoplanetary disks 53 astronomical objects 53 Trojan asteroids 53 atomic nuclei 53 electron neutrinos 53 interstellar cloud 53 coronal mass ejection 53 HIP #b 53 circumstellar disks 53 J# +# [002] 53 intrinsic brightness 53 extragalactic 53 GeV 53 nebulae 53 Gliese #g 53 Small Magellanic Cloud 53 baryon 53 protoplanets 53 BP Piscium 53 Iapetus 53 TrES 53 Solar System 53 gravitational 53 spiral galaxy NGC 53 X ray wavelengths 53 CMEs 53 Astronomers 53 quark gluon plasma 53 giant elliptical galaxy 53 Pulsars 53 boson 53 fainter 53 angular momentum 53 kaons 53 KBOs 53 reionization 53 red supergiants 53 HAT P 53 orbits 53 cosmic ray particles 53 supermassive 53 nebular 53 Coma Cluster 53 relativistic jets 52 gravitational microlensing 52 transiting exoplanet 52 constellation Aquarius 52 Cassiopeia 52 Kuiper Belt Objects 52 Kuiper Belt 52 Comet Tempel Tuttle 52 constellation Sagittarius 52 Kuiper Belt object 52 CoRoT 52 NGC# 52 Orion nebula 52 Toutatis 52 SN#A 52 CoRoT 9b 52 Fomalhaut 52 energetic electrons 52 NASA Chandra 52 gamma ray 52 ESA XMM Newton 52 muon neutrinos 52 atoms 52 particle acceleration 52 auroral 52 baryonic 52 magnetosphere 52 exo planets 52 interferometry 52 gravitational lens 52 Epsilon Aurigae 52 proto planetary disk 52 comet McNaught 52 X ray binaries 52 asteroids 52 proplyds 52 planets circling 52 redshifted 52 Neutron stars 52 Red Rectangle 52 constellation Centaurus 52 ionized particles 52 star Beta Pictoris 52 cosmological distances 52 superdense neutron star 52 V# Mon 52 Kuiper belt object 52 stellar nurseries 52 jovian 52 luminous galaxies 52 galactic cosmic rays 52 SN #D 52 faint galaxies 52 attosecond 52 Hubble observations 52 Gliese 52 solar flares 52 ULIRGs 52 ESO VLT 52 Hipparcos 52 blue straggler 52 HD# [005] 52 sodium atoms 52 asteroidal 52 comet Tempel Tuttle 52 GRB# 52 spinning neutron stars 52 WMAP satellite 52 microlensing events 52 neutrons 51 stellar seismology 51 CMB radiation 51 masers 51 moon Enceladus 51 afterglows 51 Alfven waves 51 helium atoms 51 excitons 51 Higgs bosons 51 galactic mergers 51 XTE J# 51 Cosmic Microwave Background CMB 51 Cepheid variables 51 Churyumov Gerasimenko 51 proto galaxies 51 habitable planets 51 planets orbiting distant 51 moonlet 51 Haumea 51 planet WASP #b 51 bolide 51 neutralinos 51 Eagle Nebula 51 VHE gamma rays 51 Betelgeuse 51 SNe Ia 51 optical wavelengths 51 strange quark 51 coronal loop 51 super Earths 51 electrons 51 chondrules 51 Maunder minimum 51 Lagoon Nebula 51 Magellanic Clouds 51 Wolf Rayet stars 51 proton proton collisions 51 active galactic nucleus 51 sized planets orbiting 51 protoplanetary discs 51 VLTI 51 SIRTF 51 Crab pulsar 51 muon neutrino 51 SN #E 51 Pluto Charon 51 infalling gas 51 Oort cloud 51 ultraviolet wavelengths 51 GALEX 51 constellation Lyra 51 Magnetars 51 interacting galaxies 51 Zeta Ophiuchi 51 corona 51 CAIs 51 brightest supernova 51 highly magnetized neutron 51 cosmic particles 51 Swift Tuttle 51 WIMPs 51 antineutrinos 51 R#a# 51 galaxy formation 51 Higgs particle 51 Jupiter magnetosphere 51 TGFs 51 R Coronae Borealis 51 cosmic dust 51 SMBH 51 comet tail 51 Saturn auroras 51 Very Large Array 51 HD #b [001] 51 YORP effect 51 Gal Yam 51 gamma rays emitted 51 Type 1a supernovae 51 Voorwerp 51 gravitational attraction 51 subatomic particle 51 gravitational tugs 51 elliptical galaxy NGC 50 Supernovae 50 electron orbits 50 spectroscopically 50 TW Hydrae 50 elongated orbit 50 antimatter particles 50 particles 50 Gamma rays 50 reflection nebula 50 quantum particle 50 galactic halo 50 photons particles 50 Gamma ray bursts 50 magnetization 50 Spitzer Space Telescope 50 optical telescopes 50 extrasolar planetary systems 50 solitons 50 superdense 50 polar vortex 50 filamentary structure 50 Earthlike planet 50 barred spiral galaxy 50 planetesimal 50 smallest exoplanet 50 planet gravitational tug 50 planet transits 50 polaritons 50 Trifid Nebula 50 UDFy # 50 heliosphere 50 electron 50 filamentary structures 50 asteroid belt 50 eccentric orbits 50 Adam Riess 50 cometary material 50 globular star 50 X ray observatory 50 gamma ray photons 50 spherically symmetric 50 superfluid 50 axion 50 Anisotropy Probe 50 smallest extrasolar planet 50 Heliospheric Observatory SOHO 50 spectra 50 outer planets 50 X ray emitting 50 NASA Voyager spacecraft 50 meridional flow 50 orbiting 50 Keck telescope 50 precessing 50 Helix Nebula 50 redshifts 50 runaway thermonuclear 50 sunspot 50 CoRoT satellite 50 CoRoT #b 50 elliptical orbits 50 Venusian atmosphere 50 sunlike stars 50 #gy 50 supernova SN 50 Saturn magnetosphere 50 Delta Cephei 50 Spitzer infrared spectrograph 50 prograde 50 gravitational tides 50 photosphere 50 Type Ia supernovas 50 trans Neptunian objects 50 W boson 50 X ray afterglow 50 supermassive stars 50 Goldilocks planet 50 magnetic polarity 50 Enceladus 50 circular orbits 50 gravitational tug 50 pulsations 50 OGLE TR 50 Evolution Explorer 50 Doppler shifts 50 substorms 50 oppositely directed 50 photons emitted 50 Saturnian moon 50 Fermi LAT 50 stellar occultation 50 Voyager spacecraft 50 stellar occultations 50 submillimeter 50 spectroscopic 50 Microlensing 50 Grillmair 50 W bosons 50 faraway galaxies 49 gravitational interaction 49 meteoroid 49 Eridani 49 cometary debris 49 infrared wavelengths 49 submillimetre 49 planet Gliese #g 49 NASA Wilkinson Microwave 49 Upsilon Andromedae b 49 Henize #-# 49 positron 49 coronal mass ejections 49 Pieter van Dokkum 49 astrophysicists 49 WMAP 49 fainter objects 49 Astrophysicists 49 Mimas 49 quantum tunneling 49 planets moons 49 NASA Cassini spacecraft 49 retrograde orbits 49 constellation Pegasus 49 orbits Saturn 49 mu Arae 49 constellation Ursa Major 49 oscillations 49 magnetic flux 49 sterile neutrinos 49 proto cluster 49 Cosmic rays 49 Fornax cluster 49 magma ocean 49 moon Io 49 axions 49 cosmic ray collisions 49 neutron spectrometer 49 Comet Lulin 49 cluster NGC 49 coronal loops 49 planetary orbits 49 antiparticle 49 ionised 49 extrasolar planetary 49 asteroid 49 Cassini 49 ESO telescope 49 comets orbiting 49 Wolszczan 49 supersymmetric particles 49 rotational axis 49 KH #D 49 B mesons 49 nucleosynthesis 49 innermost planet 49 galactic bulge 49 meteoroids 49 RX J# 49 Rosette Nebula 49 Galaxy Evolution 49 proton 49 moon Charon 49 detect gravitational waves 49 infrared radiation 49 SUSY 49 exciton 49 volcanic moon Io 49 colliding protons 49 weak gravitational lensing 49 shorter wavelengths 49 coronagraph 49 gamma ray observatory 49 Tarantula Nebula 49 planets orbiting stars 49 Earth magnetosphere 49 Kepler 9c 49 planet TrES 49 sunspots 49 SCP #F# 49 hydrogen nuclei 49 spectroscopic observations 49 high redshift galaxies 49 protons 49 Bug Nebula 49 Epsilon Indi 49 periodic dimming 49 orbited Jupiter 49 Active Galactic Nuclei 49 constellation Cetus 49 Galilean moons 49 constellation Taurus 49 Kuiper Belt Object 49 hypernova 49 gravitational lenses 49 hypervelocity star 49 interstellar space 49 GRB 49 submillimeter galaxies 49 extrasolar planet HD #b 49 atomic particles 48 constellation Carina 48 electron spins 48 radial velocity method 48 comet dust 48 X ray observatories 48 star Proxima Centauri 48 Gravitational lensing 48 transiting exoplanets 48 phonons 48 galactic 48 Ulysses spacecraft 48 luminosity 48 gravity warps 48 qubit 48 spatially resolved 48 Harvard Smithsonian 48 exosolar planets 48 moon Ganymede 48 Bose Einstein condensate 48 plasmon 48 V# Sgr 48 extrasolar planets orbiting 48 pseudogap 48 zodiacal light 48 galaxies collide 48 velocity dispersion 48 Bok globules 48 galactic cores 48 Saturnian 48 Jupiter moon Io 48 visible wavelengths 48 Cosmologists 48 auroras 48 VLBA 48 wavefunction 48 comet orbit 48 Chi Cygni 48 SNe 48 neutrino particles 48 binary asteroid 48 Halley comet 48 impactor spacecraft 48 arcsecond 48 magnetic monopoles 48 baryons 48 comet Hale Bopp 48 constellation Scorpius 48 Earth magnetotail 48 emission nebula 48 detect gamma rays 48 Leonids 48 Uranus 48 ringed planet 48 gamma ray photon 48 dinosaur extinction 48 dipole moment 48 spacecraft flyby 48 gravitons 48 HiRISE image 48 celestial bodies 48 OGLE TR #b 48 Phaethon 48 emit X rays 48 exoplanets planets 48 Konacki 48 Planetary nebulae 48 Carina Nebula 48 Yarkovsky effect 48 constellation Vulpecula 48 Bose Einstein condensates 48 Gamma ray burst 48 sterile neutrino 48 icy moons 48 Triangulum 48 quantum mechanical 48 galactic collisions 48 electron beams 48 orbital angular momentum 48 Martian meteorites 48 silicate dust 48 plasmons 48 ionised gas 48 polarimetry 48 brightnesses 48 dense neutron stars 48 ESA Integral 48 Comet Hale Bopp 48 gravitational perturbations 48 GRB #A 48 vortices 48 Gaensler 48 Comet Hartley 2 48 HII regions 48 Wilkinson Microwave Anisotropy Probe 48 magnetic monopole 48 planetary Transits 48 supergiant stars 48 noctilucent clouds 48 elemental abundances 48 aurorae 48 Komossa 48 occultations 48 chondrites 48 excitations 47 IRAS #-# 47 Carina constellation 47 LIGO 47 laser pulse 47 Einstein cosmological constant 47 mesons 47 moon Mimas 47 Einstein theory 47 cosmic microwave radiation 47 surface plasmons 47 WHIM 47 helium atom 47 bilayer graphene 47 #P/Churyumov-Gerasimenko 47 radial velocity technique 47 CMB photons 47 outermost planets 47 V# Puppis 47 rubidium atoms 47 lightwaves 47 Saturn aurora 47 planets orbiting sun 47 Stephan Quintet 47 dynamical 47 sun corona 47 planetary 47 IRAS 4B 47 proton antiproton collisions 47 VB #b 47 Galileo spacecraft 47 dwarf spheroidal galaxies 47 impactor 47 Optical Gravitational Lensing Experiment 47 cosmic cannibal 47 rubidium vapor 47 antiproton 47 THz radiation 47 optical interferometry 47 magnetic dynamo 47 deuterium 47 electron spin 47 constellation Cygnus 47 alpha particles 47 filaments 47 backscattered 47 astrometry 47 Comet Hartley 47 PZ Tel 47 asteroids orbiting 47 ultracold atoms 47 electron flux 47 Orionid 47 astrophysical 47 quasiparticle 47 star Fomalhaut 47 ESO PR 47 Monoceros 47 magnetotail 47 meteor 47 binary pulsar 47 neighboring Andromeda galaxy 47 luminosities 47 tau neutrinos 47 LOFAR 47 ROSAT 47 planets Uranus 47 gluon 47 gravitational slingshot 47 weakly interacting 47 interferometers 47 comet Wild 47 Peony nebula star 47 supernovae explosions 47 outer layers 47 plasmonic 47 Rayleigh scattering 47 lunar crust 47 planetary transits 47 Type 1a supernova 47 supernova remnant Cassiopeia 47 Ring Nebula 47 optical spectra 47 maser emission 47 Doradus 47 BLG #Lb 47 Comet 9P/Tempel 1 47 particles WIMPs 47 dense clumps 47 interstellar dust grains 47 SDSS II 47 starlight 47 Alycia Weinberger 47 helium nuclei 47 Sagittarius B2 47 microwave radiation 47 ray Space Telescope 47 perihelion 47 Comet Machholz 47 spherical halo 47 magnetic excitations 47 Jovian moons 47 zodiacal dust 47 Kuiper Belt objects 47 Orionids 47 Brownian motion 47 energetic gamma rays 47 starquakes 47 heliosheath 47 Lulin 47 astrophysical phenomena 47 Seyfert galaxies 47 NASA Far Ultraviolet 47 inner asteroid belt 47 J#.# [001] 47 Giovanni Cassini 47 decoherence 47 planets comets 47 galaxy Andromeda 46 XO 3b 46 cosmologists 46 Cat Paw Nebula 46 Wolfgang Brandner 46 plutoids 46 Muons 46 Planck 46 galaxy NGC# 46 wavelengths 46 ionized hydrogen 46 nucleon 46 cosmic strings 46 Astrophysical Journal Letters 46 energetic cosmic rays 46 neutralino 46 Io Europa 46 gravitationally lensed 46 icy comets 46 antiprotons 46 lithium atoms 46 Tycho supernova remnant 46 constellation Andromeda 46 planet Gliese #c 46 Phoebe orbits 46 geoneutrinos 46 rocky extrasolar planet 46 COROT 7b 46 cosmic 46 Mandushev 46 helium ions 46 SOHO spacecraft 46 Jupiter Saturn Uranus 46 constellation Perseus 46 antineutrino 46 millimeter wavelength 46 Astrophysical Journal 46 antiparticles 46 IRC +# 46 Kailash Sahu 46 lunar perigee 46 Earths orbiting 46 supersolid 46 Ordovician extinction 46 coronal hole 46 sunspot cycle 46 protons collide 46 Earth ionosphere 46 cometary 46 Werthimer 46 De Pontieu 46 galactic alignment 46 eclipsing binaries 46 Alpha Centauri 46 impactors 46 telescope 46 galactic magnetic 46 ultraluminous galaxy 46 plasmasphere 46 globular cluster M# 46 ionosphere 46 Rydberg atom 46 Raman scattering 46 Perseus cluster 46 laser pulses 46 Big Bang 46 orbiting Chandra 46 exoplanets planets outside 46 pions 46 infrared telescope 46 earthshine 46 Carinae 46 alpha particle 46 Andromeda 46 CERN LHC 46 constellation Cepheus 46 Helix nebula 46 heliopause 46 subatomic 46 radioactive decay 46 meteorite 46 Keck Interferometer 46 faintest galaxies 46 Tempel 1 46 baryonic matter 46 electrons orbiting 46 spiral nebulae 46 exoplanetary systems 46 photometer 46 electroweak 46 topological insulator 46 X ray photons 46 celestial sphere 46 particle detectors 46 planet magnetosphere 46 electron volt 46 arcminutes 46 molecule 46 orbiting planets 46 Nasa spacecraft 46 positronium atoms 46 Mössbauer 46 proton proton 46 tau neutrino 46 diffuse aurora 46 Dwarf galaxies 46 carbonaceous chondrites 46 Cherenkov radiation 46 Beehive Cluster 46 martian meteorites 46 Mpc 46 arcseconds 46 absorbs photons 46 Comet Halley 46 anomalous cosmic rays 46 arcsec 46 Nibiru 46 Earthlike