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(Click for frequent words.) 75 pulsar 73 supernovae 72 millisecond pulsars 72 neutron stars 70 galaxies 70 gamma ray bursts 70 magnetar 70 quasars 69 supernovas 69 magnetars 68 GRBs 68 neutron star 68 globular clusters 67 brown dwarfs 67 millisecond pulsar 67 X ray binary 66 extrasolar planets 66 supernova 66 galaxy clusters 66 supernova remnants 65 starburst galaxies 65 active galactic nuclei 65 exoplanets 65 quasar 65 AGNs 65 distant galaxies 65 X ray emission 64 transiting planets 64 gamma ray burst 64 dwarf galaxies 64 supernova explosions 64 supermassive black holes 64 distant quasars 64 supernova explosion 63 globular cluster 63 SN #A 63 dwarf galaxy 63 novae 63 merging galaxies 63 exoplanet 63 distant supernovae 62 astronomers 62 supernova remnant 62 planets 62 elliptical galaxies 62 planetary nebulae 62 RRATs 61 hypervelocity stars 61 Type Ia supernovae 61 protostars 61 Eta Carinae 61 blazars 61 spinning neutron stars 61 supermassive black hole 60 gravitational waves 60 Milky Way galaxy 60 X ray telescopes 60 astronomical objects 60 luminous galaxies 60 globulars 60 Cepheids 60 XMM Newton 60 KBOs 59 Hanny Voorwerp 59 sunlike stars 59 Orion Nebula 59 Type Ia supernova 59 galaxy cluster 59 faint galaxies 59 accretion disk 59 nebulae 59 optical telescopes 59 distant galaxy 59 planet orbiting 59 nebula 59 Gamma ray bursts 59 planets orbiting 59 type Ia supernova 59 extrasolar planet 59 Beta Pictoris b 59 spiral galaxies 59 eclipsing binary 58 Pulsars 58 planets orbiting distant 58 Kuiper belt objects 58 GRB # 58 rotating neutron stars 58 SN #gy 58 GRB #B 58 X ray observatories 58 terrestrial planets 58 HD#b 58 Geminga 58 redshift 58 hot Jupiters 58 planetary nebula 58 exoplanets orbiting 58 afterglows 58 elliptical galaxy 58 rocky planets 58 brown dwarf 58 extragalactic 58 protostar 57 Milky Way 57 Earthlike planets 57 type Ia supernovae 57 Epsilon Eridani 57 extrasolar 57 X ray Observatory 57 Saturn aurora 57 Hawking radiation 57 super Earths 57 protoplanetary disks 57 galaxy 57 habitable planets 57 gravitationally bound 57 redshifts 57 Kuiper Belt Objects 57 AB Aurigae 57 gravitational interactions 57 PSR J# 57 Crab Pulsar 57 WASP #b 57 exoplanetary 57 colliding galaxies 57 Type Ia 57 PSR J# +# 57 microlensing 57 red supergiant 57 X ray binaries 57 gamma ray emission 57 G#.# +#.# 56 astrophysical 56 supergiant stars 56 HD #b [002] 56 interstellar clouds 56 magnetic fields 56 Fermi telescope 56 supermassive 56 masers 56 Saturn rings 56 Higgs bosons 56 planemos 56 Milky Way Galaxy 56 RXTE 56 gravitational wave 56 X ray wavelengths 56 cosmic microwave background 56 Galilean moons 56 stellar nurseries 56 galactic mergers 56 blazar 56 metallicity 56 planets orbiting stars 56 Higgs particle 56 extrasolar planetary systems 56 gamma rays 56 axions 56 gravitational lenses 56 starburst galaxy 56 chondrules 56 galaxy M# [001] 56 planets orbits 55 RS Ophiuchi 55 radial velocity 55 exo planets 55 HM Cancri 55 galaxy formation 55 gravitational microlensing 55 galactic clusters 55 baryons 55 WIMPs 55 solar corona 55 optical wavelengths 55 microquasar 55 distant supernovas 55 supergiant star 55 auroras 55 X ray pulses 55 Gravitational waves 55 Beta Pictoris 55 gravitational lensing 55 cosmic rays 55 gamma ray flares 55 NASA Chandra 55 planetesimals 55 planets circling 55 red supergiants 55 cosmic phenomena 55 astrophysical phenomena 55 comets 55 gravitational radiation 55 Antennae Galaxies 55 subatomic particles 55 Andromeda Galaxy 55 interstellar medium 55 planet HD #b 55 neutrino 55 solitons 55 HD# [002] 55 Large Magellanic Cloud 55 Magnetars 55 baryon 55 NGC# 55 cosmologists 55 TrES 55 distant galaxy clusters 55 GeV 55 Wolf Rayet stars 54 Martian meteorites 54 inhabitable planets 54 microlensing events 54 planets orbiting sun 54 proplyds 54 Epsilon Aurigae 54 supersymmetric particles 54 proto galaxies 54 cosmic ray 54 celestial objects 54 Crab Nebula 54 astrophysicists 54 Red Rectangle 54 antineutrinos 54 baryonic 54 CoRoT 7b 54 SN #E 54 Cygnus X 54 Kepler #b 54 Kuiper Belt objects 54 Astronomers 54 galaxy NGC 54 relativistic particles 54 cosmic particles 54 Milky Way halo 54 fainter 54 ULIRGs 54 protoplanetary disk 54 spiral galaxy 54 nucleosynthesis 54 star Gliese 54 gamma ray 54 extrasolar planets orbiting 54 Lyman alpha 54 atomic nuclei 54 Gliese #d 54 exo planet 54 blue supergiant 54 Supernova #A 54 XTE J# 54 Triangulum Galaxy 54 gamma ray photons 54 transiting planet 54 protoplanet 54 interstellar dust 54 orbits 53 Cancri 53 Haumea 53 Gliese #c 53 auroral 53 observable universe 53 AU Mic 53 substorms 53 Wolszczan 53 planet orbits 53 neutrinos 53 Wolf Rayet star 53 circular orbits 53 Cepheid variables 53 Cancri e 53 ultraviolet wavelengths 53 exoplanet orbiting 53 Small Magellanic Cloud 53 intrinsic brightness 53 J# +# [002] 53 solar nebula 53 galaxy M# [002] 53 neutralinos 53 muons 53 active galactic nucleus 53 fainter objects 53 BP Psc 53 spinning pulsar 53 CMEs 53 sunlike star 53 Earthlike planet 53 Andromeda galaxy 53 galactic cosmic rays 53 solar flares 53 Saturn auroras 53 TGFs 53 ESA XMM Newton 53 Hubble observations 53 Supernovae 53 constellation Virgo 53 cosmic ray particles 53 Magellanic Clouds 53 interacting galaxies 53 Alfven waves 53 Solar System 53 exosolar planets 53 meteoroids 53 Hot Jupiters 53 NASA Wilkinson Microwave 53 ejecta 53 noctilucent clouds 53 accretion disks 53 globular star 53 Cosmic Microwave Background CMB 53 Kuiper belt 53 Neutron stars 53 #gy 53 reionization 53 SN#A 53 submillimeter galaxies 52 Sedna 52 UDFy # 52 Henize #-# 52 GJ #b [001] 52 Trojan asteroids 52 electron neutrinos 52 magnetic monopoles 52 occultations 52 HARPS instrument 52 moonlets 52 Fomalhaut b 52 GRB# 52 Corot 9b 52 Hipparcos 52 constellation Cassiopeia 52 Cosmic rays 52 Bullet Cluster 52 COROT 52 Omega Centauri 52 excitations 52 Kuiper belt object 52 galactic disk 52 Cosmic Microwave Background 52 Seyfert galaxies 52 lensing galaxy 52 kaons 52 W bosons 52 spiral nebulae 52 polarimetry 52 relativistic jets 52 stellar occultations 52 Evolution Explorer 52 positrons 52 dense neutron stars 52 Active Galactic Nuclei 52 Tycho supernova 52 RHESSI 52 elliptical orbits 52 gaseous planet 52 B mesons 52 magnetospheric 52 protoplanets 52 Type Ia supernovas 52 transiting exoplanets 52 faraway galaxies 52 stellar seismology 52 circumstellar 52 detect gravitational waves 52 GJ#b 52 Keck telescope 52 spacetime 52 muon neutrinos 52 trans Neptunian objects 52 interstellar dust grains 52 OGLE TR #b 52 antihydrogen atoms 52 galactic cores 52 Gliese #g 52 asteroids 52 CMB radiation 52 alien civilizations 52 Gliese 52 moons orbiting 52 Doppler shifts 51 CAIs 51 celestial bodies 51 retrograde orbit 51 Earthlike 51 cosmological distances 51 magnetic reconnection 51 proton antiproton collisions 51 brightest supernova 51 substorm 51 Type 1a supernovae 51 particle acceleration 51 shorter wavelengths 51 X ray observatory 51 energetic electrons 51 circumstellar disks 51 sized planets orbiting 51 CoRoT 51 Arches Cluster 51 Spitzer Space Telescope 51 comets orbiting 51 boson 51 gamma ray telescopes 51 superluminal 51 W boson 51 earthlike planets 51 planetoids 51 P/# A2 51 gaseous planets 51 galaxies collide 51 muon 51 Coma Cluster 51 galactic collisions 51 nebular 51 sterile neutrinos 51 submillimetre 51 tau neutrinos 51 sterile neutrino 51 nuclei 51 meteorites 51 quark gluon plasma 51 Gal Yam 51 SUSY 51 astronomical observations 51 biosignatures 51 Earths orbiting 51 Maunder minimum 51 TrES 4 51 X ray emitting 51 smallest extrasolar planet 51 helium atoms 51 axion 51 sunspots 51 spectroscopic measurements 51 icy moons 51 protoplanetary discs 51 Galilean satellites 51 Kuiper Belt Object 51 polaritons 51 planets moons 51 neutrons 51 gravitationally 51 interstellar cloud 51 antiparticles 51 astrometry 51 celestial phenomena 51 magnetospheres 51 RS Oph 51 WMAP 51 exoplanets planets outside 51 extraterrestrial civilizations 51 Astrophysicists 51 high redshift galaxies 51 cosmological 51 BP Piscium 51 accreting 50 antiprotons 50 highly magnetized neutron 50 Upsilon Andromedae 50 gravitons 50 infall 50 galactic nuclei 50 Alfvén waves 50 GJ #b [002] 50 sodium atoms 50 optical interferometry 50 eclipsing binaries 50 eccentric orbits 50 chemical abundances 50 retrograde orbits 50 Very Large Array 50 GRB #A 50 planetary transits 50 supernova SN 50 XMM Newton observations 50 Corot 7b 50 photons 50 atoms 50 celestial object 50 interstellar dust clouds 50 Microlensing 50 elongated orbits 50 HII regions 50 proto planetary disks 50 SNR #-#.# 50 brightnesses 50 Gamma rays 50 ULP cepheids 50 outer planets 50 muon neutrino 50 comet 50 antimatter particles 50 SCP #F# 50 giant elliptical galaxy 50 planet Uranus 50 CoRoT #b 50 God Particle 50 planet TrES 50 oscillations 50 Gamma ray burst 50 nucleon 50 extrasolar planetary 50 X ray afterglow 50 blue straggler 50 PSR B# +# 50 YORP effect 50 astrophysical objects 50 Kuiper Belt object 50 Adam Riess 50 distant quasar 50 GALEX 50 protoplanetary 50 hypernova 50 gravitational lens 50 sparticles 50 electron spin 50 SN #C 50 CoRoT satellite 50 constellation Sagittarius 50 diffuse aurora 50 habitable worlds 50 filamentary structure 50 Bose Einstein condensates 50 submillimeter wavelengths 50 Voorwerp 50 R#a# 50 Higgs boson 50 SNe Ia 50 jovian 50 Werthimer 50 cosmic ray collisions 50 dwarf spheroidal galaxies 50 Comet Holmes 50 cometary material 49 supernovae explosions 49 V# Mon 49 VHE gamma rays 49 aurora 49 impactors 49 constellation Hercules 49 photons emitted 49 spectroscopic 49 gamma ray observatory 49 redshifted 49 ESO VLT 49 radial velocity technique 49 comet nucleus 49 Proxima Centauri 49 gamma ray bursts GRBs 49 Voyager spacecraft 49 interferometers 49 planet WASP #b 49 Global Surveyor 49 photosphere 49 Pieter van Dokkum 49 infrared wavelengths 49 Anisotropy Probe 49 coronal mass ejections 49 Gliese #e 49 quantum gravity 49 constellation Taurus 49 reflection nebula 49 WM Keck Observatory 49 spiral galaxy NGC 49 Gamma ray 49 GRB 49 energetic cosmic rays 49 elliptical galaxy NGC 49 pulsations 49 mesons 49 Pluto Charon 49 SNe 49 aurorae 49 exoplanetary systems 49 Giovanni Cassini 49 cosmic microwave radiation 49 atomic particles 49 binary asteroids 49 Wilkinson Microwave Anisotropy Probe 49 LOFAR 49 high temperature superconductivity 49 Betelgeuse 49 Super Earths 49 plutoids 49 smallest exoplanet 49 X ray photons 49 spectra 49 Carina constellation 49 Komossa 49 Bok globules 49 Higgs boson particle 49 Cosmologists 49 ROSAT 49 energetic gamma rays 49 constellation Centaurus 49 neutralino 49 rotating neutron 49 asteroids comets 49 Geminids 49 Galaxy Evolution 49 radial velocity method 49 Anisotropy Probe WMAP 49 general relativity 49 optical spectra 49 moon Ganymede 49 Grillmair 49 terahertz frequency 49 Muons 49 interferometry 49 galaxies quasars 49 constellation Carina 49 potentially habitable planets 49 infrared telescopes 49 solar neutrinos 49 Alex Filippenko 49 bolometers 49 planetoid 49 Filippenko 49 detect gamma rays 49 HL Tau 49 proton proton collisions 49 Kuiper Belt 49 IRC +# 49 gamma ray detectors 49 Virgo Cluster 49 sunspot 49 Galaxies 49 habitable planet 49 mu Arae 49 astronomer 49 supersymmetry 49 Astrophysical 49 high temperature superconductors 49 attosecond 49 planetary orbits 49 photons particles 48 excitons 48 planets atmospheres 48 SMBHs 48 Epsilon Indi 48 Astrophysical Journal Letters 48 ESO telescopes 48 barred spiral galaxy 48 Gaensler 48 transiting exoplanet 48 carbonaceous chondrites 48 HARPS spectrograph attached 48 coronal loops 48 particle detectors 48 intracluster 48 spherically symmetric 48 cosmological theories 48 luminosities 48 binary asteroid 48 Saturnian moon 48 Zeta Ophiuchi 48 ESO PR 48 antiparticle 48 chondrites 48 weak gravitational lensing 48 subatomic particle 48 starquakes 48 WMAP satellite 48 Gehrels 48 VY Canis Majoris 48 planets astronomers 48 baryonic matter 48 telescopes 48 galactic halo 48 protons 48 Dwarf galaxies 48 Pegasi 48 RX J# 48 TNOs 48 rubidium atoms 48 carbonate minerals 48 phonons 48 globular cluster M# 48 SN #D 48 planet Gliese #g 48 planetary 48 interstellar grains 48 fading afterglow 48 cosmic gamma rays 48 constellation Lyra 48 SDSS II 48 highly elliptical orbits 48 Toutatis 48 Delta Cephei 48 Comet Tempel Tuttle 48 Hale Bopp 48 superdense neutron star 48 Diviner 48 Pluto Eris 48 Helix Nebula 48 vortices 48 KH #D 48 wavelengths 48 spectroscopic observations 48 Neutrinos 48 rocky terrestrial planets 48 gravitational perturbations 48 constellation Cetus 48 Einstein theories 48 Fornax cluster 48 meteorite impacts 48 Oort Cloud 48 electron neutrino 48 photon 48 planets asteroids 48 exciton 48 spinning neutron 48 neutrino particles 48 electroweak 48 particle accelerators 48 dynamical evolution 48 CoRoT 9b 48 Jupiter Saturn Uranus 48 emit X rays 48 missing baryons 48 electron beams 48 icy comets 48 HD# [005] 48 VLBA 48 hypervelocity star 48 MG J# +# 48 supergiants 48 HIP #b 48 comet Hale Bopp 48 fermion 48 meteors 48 superpositions 48 Maxwell equations 48 gamma ray emitting 48 GQ Lupi 48 proto cluster 48 theoretical particle 48 giant elliptical galaxies 48 earthshine 48 organic molecules 48 OGLE 48 supersymmetric 48 Extrasolar planets 48 nucleobases 48 ionized gas 48 COROT exo 3b 48 Yusef Zadeh 47 DZero 47 cosmological models 47 gravitationally lensed 47 Cassiopeia 47 Venusian atmosphere 47 spatially resolved 47 silicate dust 47 orbiting Chandra 47 ALMA antennas 47 foreground galaxy 47 ultraluminous galaxy 47 Orionid 47 Io Europa 47 Mpc 47 Comet Hale Bopp 47 Jovian moons 47 cosmology 47 planet transits 47 millimeter wavelengths 47 Leonids 47 Veil Nebula 47 emits X rays 47 Elliptical galaxies 47 exosphere 47 circumstellar disk 47 Astrophysical Journal 47 superheavy elements 47 wavebands 47 infalling gas 47 moon Io 47 Fermi Gamma ray 47 XMM Newton satellite 47 exoplanets planets 47 Optical Gravitational Lensing Experiment 47 ultracold atoms 47 geomagnetic storms 47 spectrograph 47 Nasa spacecraft 47 filaments 47 Virgo cluster 47 CMB photons 47 PSR B# 47 UVOT 47 Bug Nebula 47 Earths 47 comets asteroids 47 asteroseismology 47 Heliospheric Observatory SOHO 47 Saturn magnetosphere 47 supervolcanoes 47 asteroidal 47 moons 47 dust enshrouded 47 primitive meteorites 47 mantle plumes 47 subatomic 47 Richard Mushotzky 47 dirty snowballs 47 interstellar molecules 47 Rayleigh scattering 47 Iapetus 47 particles WIMPs 47 infalling 47 emission nebula 47 Lagoon Nebula 47 inner moons 47 quantum particles 47 comet McNaught 47 antihydrogen 47 asteroid belt 47 Kepler 9c 47 Trifid Nebula 47 electron volts 47 extraterrestrial civilization 47 Oort cloud 47 spectroscopy 47 maser 47 Tevatron experiments 47 deuterium 47 submillimeter 47 supermassive stars 47 orbiting planets 47 planetesimal 47 martian meteorites 47 HAT P 47 constellation Ursa Major 47 coronal mass ejections CMEs 47 orbited Jupiter 47 photometry 47 Brownian motion 47 quarks 47 magnetosphere 47 runaway thermonuclear 47 magma ocean 47 planet Gliese #c 47 telescopic observations 47 superstrings 47 magnetic excitations 47 Crab pulsar 47 WFPC2 47 planets comets 47 Perseus Cluster 47 ESA Integral 47 protons collide 47 superfluids 47 Fomalhaut 47 Puppis 46 Sara Seager 46 SNfactory 46 Konacki 46 visible wavelengths 46 Ordovician extinction 46 HESS telescopes 46 cluster NGC 46 Earth magnetosphere 46 ionized particles 46 weakly interacting 46 proto planetary disk 46 phyllosilicates 46 radioactive nuclei 46 Exoplanet 46 electrons 46 moon Enceladus 46 Milankovitch cycles 46 geoneutrinos 46 corona 46 Lyrids 46 constellation Cygnus 46 Eagle Nebula 46 ionized gases 46 spectroscopically 46 Photons 46 Andromeda halo 46 massless particles 46 Planetary Transits 46 Planetary nebulae 46 singularities 46 magnetic flux 46 laser pulses 46 De Pontieu 46 moonlet 46 novas 46 Cat Paw Nebula 46 astronomical phenomena 46 ionized hydrogen 46 Scorpii 46 lunar crust 46 surface plasmons 46 ultrashort laser pulses 46 Space Telescope 46 Globular clusters 46 constellation Aquarius 46 SN #cr 46 planetary magnetospheres 46 planetary embryos 46 nanomotors 46 relativistic protons 46 particles emitted 46 Planck 46 hydrated minerals 46 VLTI 46 Very Large Telescope 46 gravitational redshift 46 OGLE TR 46 particles 46 spectroscope 46 gamma ray photon 46 Ulysses spacecraft 46 fermionic 46 AAVSO 46 synchrotrons 46 spacecraft flyby 46 habitable zones 46 outermost planets 46 faintest galaxies 46 electron orbits 46 Stephan Quintet 46 HUDF 46 ionised gas 46 coronal heating 46 telescope 46 Orion nebula 46 electron 46 galactic bulge 46 Comet Lulin 46 antimatter 46 Doradus 46 dipole moment 46 Cepheid variable 46 astronomy 46 superfluid 46 asteroid 46 galaxy NGC# 46 BLG #Lb 46 Orionid meteors 46 Exoplanets 46 auroral displays 46 abundances 46 WHIM 46 Enceladus 46 permanently shadowed craters 46 Solar flares 46 multicellular animals 46 coronal holes 46 Saturnian 46 luminosity 46 neutron spectrometer 46 supercontinent 46 ESO telescope 46 J#.# [001] 46 Kailash Sahu 46 Wolfgang Brandner 46 star Beta Pictoris 46 quantum mechanical 46 airglow 46 proton collisions 46 placental mammals 46 R Coronae Borealis 46 tau neutrino 46 Eridani 46 antiproton 46 Type 1a supernova 46 constellation Ophiuchus 46 Ring Nebula 46 SMBH 46 photon fluorescence 46 cosmic dust 46 Kepler 9b 46 hydrogen nuclei 46 spherical halo 46 rubidium vapor 46 moonquakes 46 Mamajek 46 magnetic substorms 46 radiometers 46 Galactic cosmic rays 46 Tarantula Nebula 46 CfA 46 spectral signature 46 binary quasar 46 neutrino beam 46 undiscovered particle 46 fermions 46 attosecond pulses 46 ringed planet 46 spectral fingerprint 46 atom smashers 46 bosonic 46 phosphorescence 46 noble gases 46 Comet Halley 46 planetary atmospheres 46 magnetic polarity 46 Viking landers 46 Rosette Nebula