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(Click for frequent words.) 66 Elliptical galaxies 66 Pieter van Dokkum 65 habitable planets 64 supermassive 63 exoplanets orbiting 62 planets orbiting distant 61 planetary nebulae 61 Neutron stars 61 X ray binary 61 planets moons 60 Earthlike planets 60 planets orbiting sun 60 extrasolar 59 Milky Way halo 59 stellar nurseries 59 Magnetars 59 rocky planets 58 sunlike stars 58 planets 58 interstellar dust clouds 58 globular clusters 58 exoplanet orbiting 58 R Coronae Borealis 58 Upsilon Andromedae 58 circumstellar disks 58 galaxy 57 gravitationally bound 57 neutralinos 57 Epsilon Eridani 57 extrasolar planets orbiting 57 terrestrial planets 57 eclipsing binary 57 habitable worlds 57 Kuiper Belt Objects 57 protoplanetary discs 57 habitable zones 57 red supergiants 57 permanently shadowed craters 57 distant galaxies 57 WASP #b 57 galaxies 56 Fermi telescope 56 protostar 56 interstellar cloud 56 Carina constellation 56 Gliese #c 56 Kepler 9c 56 globular cluster 56 brown dwarfs 56 supernovas 56 observable universe 56 supergiant star 56 merging galaxies 56 inhabitable planets 56 BP Psc 56 protostars 56 Bok globules 56 nucleosynthesis 56 relativistic particles 56 Supermassive black 56 Hot Jupiters 56 protoplanetary disk 56 Oort Cloud 56 starburst galaxies 56 planets orbits 56 luminous galaxies 55 TrES 4 55 magnetars 55 Lars Hernquist 55 dwarf galaxies 55 globulars 55 cluster NGC 55 Cepheids 55 SMBH 55 Milky Way Galaxy 55 comets orbiting 55 Orion nebula 55 galaxies collide 55 interstellar clouds 55 millisecond pulsar 55 Proxima Centauri 55 SMM J# 55 active galactic nuclei 55 VY Canis Majoris 55 distant galaxy 55 galaxy formation 55 Milky Way galaxy 55 Astrophysicists 55 blue supergiant 55 Supernovae 55 infalling gas 55 constellation Hercules 55 planet Gliese #g 55 Omega Centauri 55 transiting planets 55 millisecond pulsars 55 Type 1a supernovae 55 supernovae 55 habitable planet 55 supersymmetric particles 55 planets circling 55 icy moons 55 IRC +# 55 planemos 55 super Earths 55 neighboring Andromeda galaxy 55 Bug Nebula 55 Zeta Ophiuchi 54 cosmological distances 54 accretion disks 54 comets asteroids 54 Pleiades cluster 54 planets orbiting stars 54 X ray wavelengths 54 earthlike planets 54 Wolszczan 54 quasars 54 Fomalhaut b 54 exosolar planets 54 Evolution Explorer 54 Type Ia supernovas 54 supergiant stars 54 elliptical galaxies 54 distant supernovae 54 electron neutrinos 54 Eagle Nebula 54 highly elliptical orbits 54 proto galaxies 54 spinning neutron stars 54 retrograde orbit 54 moons orbiting 54 Cepheid variables 54 neutron star 54 sized planets orbiting 54 Gliese #d 54 Rosette Nebula 54 Higgs bosons 54 BP Piscium 54 dust enshrouded 54 microquasar 54 supermassive black holes 54 GRBs 54 nebulae 54 Trapezium 54 Exoplanets 54 extrasolar planets 54 planetoids 54 lunar craters 54 X ray binaries 54 extrasolar planetary systems 53 proplyds 53 Andromeda galaxy 53 AU Mic 53 planets orbiting 53 supernova explosions 53 Alpha Centauri 53 Super Earths 53 Cosmic Microwave Background 53 Upsilon Andromedae b 53 gamma ray bursts 53 dwarf galaxy 53 retrograde orbits 53 COROT 53 spinning neutron 53 gravitational microlensing 53 hot Jupiters 53 planet HD #b 53 spectroscopically 53 supergiants 53 Geminga 53 infall 53 distant quasar 53 novas 53 blazars 53 Triangulum 53 Beta Pictoris b 53 planetary nebulas 53 astrophysical phenomena 53 Red Rectangle 53 Avi Loeb 53 AGNs 53 Cygnus Lyra region 53 exoplanetary 53 Mandushev 53 novae 53 galactic disk 53 SN #A 53 exo planets 53 Gamma ray bursts 53 antiparticle 53 Shri Kulkarni 53 SUSY 53 HD# [002] 53 orbiting planets 53 Earthlike planet 53 supernova explosion 53 HM Cancri 53 protoplanetary disks 53 red supergiant 53 muon neutrinos 52 Corot 9b 52 Corot 7b 52 gravitational tugs 52 planet Gliese #c 52 galaxy M# [001] 52 asteroids comets 52 gravitationally 52 J# +# [002] 52 Ring Nebula 52 Active Galactic Nuclei 52 astrophysicists 52 gravitational perturbations 52 extrasolar worlds 52 periodic dimming 52 Neptune Uranus 52 Comet Elenin 52 cosmic neutrinos 52 galactic mergers 52 Kuiper belt objects 52 galaxies nebulae 52 hypervelocity star 52 Orion Nebula 52 Coma Cluster 52 supernovae explosions 52 proton antiproton collisions 52 planetary 52 reionization 52 redshifts 52 photosphere 52 antimatter particles 52 Perseus Cluster 52 Type Ia supernovae 52 GJ #b [002] 52 Fornax cluster 52 redshift 52 RX J# 52 extragalactic 52 Beta Pictoris 52 mu Arae 52 radial velocity technique 52 tau neutrinos 52 Saturn Enceladus 52 Henize #-# 52 asteroseismology 52 Supergiant 52 emit X rays 52 WIMPs 52 ESO VLT 52 blackholes 52 Nikku Madhusudhan 52 type Ia supernovae 52 Milky Way 52 Dan Werthimer 52 galactic clusters 52 eccentric orbits 52 KBOs 52 galactic 52 CoRoT 52 colliding galaxies 52 Herbig Ae Be 52 constellation Carina 52 X ray observatory 52 gravitational radiation 52 luminosities 52 magnetar 52 exoplanets 52 Cat Paw Nebula 52 Solar TErrestrial RElations Observatory 52 Crab Nebula 52 hypervelocity stars 52 Alycia Weinberger 51 HD#b 51 protoplanetary 51 Trifid 51 thermonuclear fusion 51 planet orbits 51 hypernova 51 Wolf Rayet star 51 rotating neutron 51 SN #gy 51 elongated orbits 51 Pluto Charon 51 IRAS #-# 51 Crab pulsar 51 radial velocity 51 Canes Venatici 51 Gaensler 51 type Ia supernova 51 constellation Cassiopeia 51 supermassive black hole 51 ionized hydrogen 51 circumstellar disk 51 Tarantula Nebula 51 galactic nuclei 51 Galaxy Evolution 51 Delta Cephei 51 permanently shadowed 51 astronomical objects 51 Jovian moons 51 cosmic phenomena 51 star Gliese 51 planets comets 51 pulsars 51 spectroscopic observations 51 rotating neutron stars 51 globular cluster M# 51 Solar flares 51 Kuiper belt object 51 circumstellar 51 galactic cosmic rays 51 positrons 51 earths 51 binary asteroid 51 Exoplanet 51 Galilean moons 51 plutoids 51 extraterrestrial civilizations 51 SMBHs 51 Extrasolar planets 51 X ray observatories 51 quasar 51 spherical halo 51 astrophysical 51 icy comets 51 galaxy M# [002] 51 RY Sagittarii 51 outermost planets 51 protoplanet 51 metallicity 51 RRATs 51 Cosmic Background Explorer COBE 51 Galactic cosmic rays 51 Eta Carinae 51 Pegasi 50 occultations 50 supernova 50 Gondolo 50 Gravitational waves 50 Io Europa 50 Planetary nebulae 50 Astrophysics Cambridge Mass. 50 cosmic cannibal 50 detect gravitational waves 50 astrometry 50 Gliese #g 50 intrinsic brightness 50 brown dwarf 50 Wide Angle Search 50 transiting planet 50 coronal loops 50 Earthlike 50 baryon 50 brightnesses 50 constellation Virgo 50 supernova remnants 50 T Tauri 50 coronal mass ejections CMEs 50 Scorpii 50 gravitational lenses 50 transiting exoplanets 50 neutron stars 50 Sara Seager 50 Camelopardalis 50 detect gamma rays 50 SN #ha 50 electron positron 50 Charles Beichman 50 Relations Observatory STEREO 50 Kuiper Belt objects 50 gamma ray emission 50 dense neutron stars 50 Kuiper Belt Object 50 AB Aurigae 50 Andromeda Galaxy 50 Tau Ceti 50 moons Phobos 50 spiral galaxy Messier 50 tidal bulge 50 suns 50 planet WASP #b 50 gamma ray telescopes 50 moonlets 50 Jupiter Saturn 50 Globular clusters 50 axions 50 gamma ray burst 50 planetary embryos 50 Wolf Rayet stars 50 Gamma rays 50 planets constellations 50 planet HD#b 50 distant quasars 50 gravitational interaction 50 giant elliptical galaxy 50 Cosmic rays 50 GQ Lupi 50 trans Neptunian objects 50 BLG #Lb 50 jovian 50 PSR B# +# 50 extraterrestial 50 XTE J# 50 solar corona 50 superstrings 50 RS Ophiuchi 50 V# Sgr 50 Saturn outermost ring 50 Uranus Neptune 50 Gliese #e 50 Stassun 50 exo planet 50 Earths 50 ultraviolet wavelengths 50 accretion disk 50 moon Io 49 Betelgeuse 49 proto cluster 49 cosmic strings 49 celestial objects 49 Cosmologists 49 gravitationally lensed 49 asteroids orbiting 49 SIM PlanetQuest 49 fainter objects 49 Svedhem 49 OGLE TR 49 Type Ia supernova 49 dwarf spheroidal galaxies 49 SDSS II 49 aurorae 49 Andromeda halo 49 X ray emitting 49 highly magnetized neutron 49 neutrinos 49 magnetic monopoles 49 X ray telescopes 49 Kuiper belt 49 IRAS 4B 49 Trojan asteroids 49 planetary orbits 49 GJ #b [001] 49 Epsilon Indi 49 Harlow Shapley 49 constellation Vulpecula 49 Lagoon Nebula 49 elliptical galaxy 49 X ray emission 49 Dumbbell Nebula 49 planet transits 49 Stephan Quintet 49 Diviner 49 interstellar grains 49 neutrino 49 nebular 49 Higgs Boson particle 49 exoplanet hunter 49 COROT 7b 49 orbiting 49 sunlike star 49 ESA XMM Newton 49 chemical abundances 49 GALEX 49 primordial ingredients 49 gravitational tides 49 alien civilizations 49 prominences 49 constellation Centaurus 49 Werthimer 49 Earth radii 49 Kuiper Belt object 49 magnetospheric 49 Coma cluster 49 Hipparcos 49 starbursts 49 redshifted 49 prebiotic molecules 49 cosmic particles 49 HIP #b 49 GJ#b 49 GRB #B 49 dimming starlight 49 planet orbiting 49 universe 49 protoplanets 49 moon Europa 49 Cancri e 49 particle colliders 49 dusty cocoons 49 nucleon 49 Saturn moons 49 Astrophysical 49 Seyfert galaxies 49 Eridani 49 Orion constellation 49 particle smasher 49 constellation Cygnus 49 CoRoT 9b 49 magma ocean 49 constellation Ursa Major 49 gravity warps 49 Saturn Cassini 49 Distant galaxies 49 silicon monoxide 49 Milankovitch cycles 49 brightest supernova 49 HL Tau 49 orbital resonance 49 planetary alignments 49 antihelium 4 49 Bohdan Paczynski 48 ultraviolet photons 48 Martian craters 48 constellation Aquarius 48 potentially habitable planets 48 millimeter wavelength 48 energetic electrons 48 Apophis asteroid 48 exoplanetary systems 48 extrasolar planetary 48 self replicating nanobots 48 strange quark 48 dwarf spheroidal 48 high redshift galaxies 48 Extrasolar Planets 48 microlensing 48 David Spergel 48 stellar seismology 48 smoothest flattest 48 SIRTF 48 subatomic particle 48 electronvolts 48 HD #b [001] 48 CoRoT 7b 48 infalling 48 Galaxies 48 Toutatis 48 subsurface ocean 48 Voyager probes 48 gravitational interactions 48 constellation Pegasus 48 asteroids 48 Oort cloud 48 Magellanic Clouds 48 align creator Joss 48 exoplanet 48 colliding protons 48 particle acceleration 48 ionized gases 48 lunar meteorites 48 solar radii 48 active galactic nucleus 48 VISTA telescope 48 antiparticles 48 Manned missions 48 Peter Capak 48 electroweak 48 supernovae explode 48 solar flares 48 interacting galaxies 48 Pluto Eris 48 Small Magellanic Cloud 48 Large Magellanic Cloud 48 starburst galaxy 48 planets asteroids 48 auroral 48 energetic cosmic rays 48 Sagittarius B2 48 gravitational waves 48 Bryan Gaensler 48 planetary Transits 48 radioactive nuclei 48 Mars Uranus 48 blue straggler 48 Pulsars 48 Supernova #A 48 galaxy clusters 48 Cancri 48 galactic cores 48 binary asteroids 48 supersymmetric 48 Gravitational lensing 48 intracluster 48 Gal Yam 48 CoRoT #b 48 nebula NGC 48 superheavy elements 48 neutrino particles 48 WM Keck Observatory 48 Astronomers Discover 48 Kepler #b 48 smallest exoplanet 48 Hubble observations 48 constellation Sagittarius 48 Solar System 48 planet 48 RXTE 48 Keck Interferometer 48 Astronomers 48 thermonuclear reactions 48 Franck Marchis 48 distant suns 48 accreting 48 Muons 48 exoplanets planets 48 Spudis 48 gamma ray emitting 48 interstellar medium 48 #P/Churyumov-Gerasimenko 48 XO 3b 48 hadrons 48 Eric Becklin 48 Computational Cosmology 48 crystalline silicates 48 biosignatures 48 primordial galaxies 48 Neil Gehrels 48 giant elliptical galaxies 48 Comet Hartley 2 48 circumstellar dust 47 quark gluon plasma 47 ionized gas 47 ray Space Telescope 47 Extrasolar 47 planets Uranus 47 Astrophysics MOA 47 afterglows 47 planetary nebula 47 GeV 47 Z bosons 47 outer planets 47 KH #D 47 Owen Gingerich 47 Epsilon Aurigae 47 Comet Halley 47 Fermilab Tevatron 47 pions 47 interstellar dust particles 47 chromosphere 47 assumed planets circling 47 particle detectors 47 sterile neutrinos 47 Carina Nebula 47 Nima Arkani Hamed 47 VLTI 47 gluon 47 extraterrestrial UFOs 47 habitable zone 47 evaporite deposits 47 Keck telescope 47 orbiting observatories 47 gamma ray observatory 47 giant gaseous planets 47 nebula 47 La Silla observatory 47 constellation Draco 47 planetary surfaces 47 Spectrograph 47 atmospheric neutrinos 47 eclipsing binaries 47 thermonuclear explosions 47 TW Hydrae 47 Jupiter magnetosphere 47 astrophysical objects 47 Higgs particle 47 XMM Newton 47 globular star 47 planets circling stars 47 diffuse aurora 47 cosmic rays 47 constellation Cetus 47 NASA Fermi Gamma 47 HAT P 47 constellation Scorpius 47 neutralino 47 baryonic 47 Kepler spacecraft 47 ULIRGs 47 Bose Einstein condensates 47 Adam Riess 47 celestial object 47 galaxy NGC 47 Arches Cluster 47 polarimetry 47 astrometric 47 superdense 47 Churyumov Gerasimenko 47 leptons 47 dense clumps 47 Andrea Ghez 47 reflection nebula 47 Jupiter Uranus 47 exoplanets planets outside 47 Avishay Gal Yam 47 supersymmetry 47 Doradus 47 chondrules 47 asteroid collisions 47 ESA Herschel 47 spiral nebulae 47 Mauna Kea Hawaii 47 exosphere 47 QQ# 47 gamma rays 47 SNe Ia 47 Virgo cluster 47 binary quasar 47 gaseous planets 47 Cepheus 47 superclusters 47 sodium atoms 47 Nasa Kepler 47 neutrino beam 47 submillimetre wavelengths 47 Type Ia 47 airglow 47 orbits 47 polar craters 47 moons circling 47 Dwarf galaxies 47 spatially resolved 47 MG J# +# 47 cosmological theories 47 comets 47 spherically symmetric 47 Martian meteorites 47 sterile neutrino 47 Kevin Schawinski 47 permanently shadowed regions 47 dynamical evolution 47 foreground galaxy 47 celestial bodies 47 YORP effect 47 Anthony Remijan 47 extrasolar planet 47 Weakly Interacting Massive Particles 47 brane 47 X ray Observatory 47 VB #b 47 astronomers 47 HARPS spectrograph attached 47 Antennae Galaxies 47 Cosmic Evolution 47 parsecs 47 Gamma ray burst 47 OGLE TR #b 47 Saturnian moon Titan 47 Supernovas 47 Hawking radiation 47 planets atmospheres 47 hadron 47 starquakes 47 interstellar dust grains 47 Samuel Oschin Telescope 47 UDFy # 47 largest moon Charon 47 Observatory STEREO 47 dirty snowballs 47 redshift z = 47 NASA Cassini 47 GRB# 47 energetic gamma rays 47 van Dokkum 47 subatomic 47 GRB # 47 meter Keck telescopes 47 gamma rays emitted 47 SNR #-#.# 46 noctilucent clouds 46 singularities 46 atom smashers 46 proto planetary disk 46 transiting exoplanet 46 diffraction patterns 46 Konacki 46 interstellar 46 optical wavelengths 46 primitive organisms 46 Carinae 46 asteroid impacts 46 Helix Nebula 46 superfluids 46 Kuiper Belt 46 constellation Taurus 46 reionization epoch 46 Alex Filippenko 46 faint galaxies 46 spiral galaxy 46 Hubble Space Telescope HST 46 WISE telescope 46 Fermi Telescope 46 Giovanni Fazio 46 NASA THEMIS 46 substorm 46 Triangulum Galaxy 46 planetesimals 46 interstellar space 46 Seth Shostak 46 Venusian atmosphere 46 moons orbiting Saturn 46 magnetosphere 46 orbiting Chandra 46 B mesons 46 HARPS instrument 46 Eridanus 46 zodiacal dust 46 gravitons 46 shadowy craters 46 radial velocity method 46 strangelets 46 supernova remnant 46 protons collide 46 sextillion 46 Keck Telescope 46 lunar landers 46 boson 46 Astrophysicist 46 Explorer GALEX 46 SN#A 46 filamentary structure 46 NASA Heliophysics 46 mesons 46 Earth asteroids 46 outermost planet 46 stellar occultations 46 Terrestrial Planet Finder 46 pulsar 46 Puppis 46 antiprotons 46 constellation Lyra 46 helium nuclei 46 Martian rovers 46 Crab Pulsar 46 squares triangles 46 #,#,#,#,#,#,# [004] 46 Kepler 9b 46 Brookhaven Relativistic Heavy 46 blazar 46 presolar grains 46 asteroid 46 Submillimeter Array 46 galactic halo 46 Anisotropy Probe WMAP 46 Venus Neptune Uranus 46 Super Kamiokande 46 strangelet 46 galactic bulge 46 Doppler shifts 46 AUs 46 X ray spectrometer 46 Coma Berenices 46 2MASS 46 Saturn moon Iapetus 46 masers 46 Kaluza Klein 46 Orionids 46 Jovian moon 46 Andrei Linde 46 Comet Machholz 46 NASA Kepler spacecraft 46 TNOs 46 THEMIS satellites 46 detect neutrinos 46 astrobiologists 46 IntergalaticEarth 46 Mimas 46 nanoantennas 46 Great Observatories 46 proto planetary disks 46 Sasselov 46 spiral galaxies 46 X ray pulses 46 Goldilocks planet 46 submillimeter wavelengths 46 z ~ 46 HD #b [002] 46 spiral galaxy NGC 46 Keck telescopes 46 NGC# 46 hydrogen helium 46 Astrophysical Institute 46 Stephane Udry 46 lepton 46 Spitzer infrared spectrograph 46 Fashion Movie Reviews 46 colliders 46 Comet NEAT 46 icy moon Enceladus 46 gaseous planet 46 gravitational wobbles 46 Galileo spacecraft 46 GLAST telescope 46 Alfvén waves 46 Peony nebula star 46 atoms 46 NASA Far Ultraviolet 46 Cepheid variable 46 moonlet 46 planetary astronomy 46 Meteorites 46 planet Uranus 46 Space Telescopes 46 Syrtis Major 46 weakly interacting 46 synchronous orbit 46 magnetospheres 46 mantle plumes 46 Beehive Cluster 46 tidally locked 46 barred spiral galaxy 46 Dwarf Galaxies 46 electron volts 46 emission nebula 46 branes 46 occulted 46 Mpc 46 TrES 46 shadowed craters 46 Martian dust 46 Voorwerp 46 ESA Cluster 45 Type 1a supernova 45 electrons protons 45 lunar poles 45 Eta Carina 45 moon Enceladus 45 Rayleigh scattering 45 solar neutrinos 45 constellation Leo 45 Sedna 45 Galactic Plane 45 spectroscopic measurements 45 neutron spectrometer 45 antineutrinos 45 Asantha Cooray 45 submillimetre 45 IBEX spacecraft 45 galaxy cluster 45 Laser Interferometer Gravitational Wave 45 Gemini constellation 45 NASA Kepler telescope 45 lunar crust 45 MINOS experiment 45 Hubble Constant 45 Garth Illingworth 45 Planck satellite 45 cosmologists 45 SNe 45 superbubble 45 star clusters nebulae 45 Drake Equation 45 Mario Livio 45 called gravitational microlensing 45 synchrotrons 45 constellation Pisces 45 Mojzsis 45 electron volt 45 dustier stormier atmosphere 45 constellation Aquila 45 prograde 45 NASA Chandra 45 Saturn rings 45 SuperWASP 45 Flyby spacecraft 45 antiquarks 45 Image NASA JPL 45 meteoroid impacts 45 supercomputer simulations 45 Mössbauer 45 astrobiological 45 constellation Andromeda 45 Helix nebula 45 Planetary Transits 45 cosmic ray particles 45 faintest galaxies 45 smoothest flattest spot 45 interstellar dust 45 Uranus Jupiter 45 Saturn outermost 45 glow brightly 45 impactors 45 dusty disks 45 Hadron collider 45 Jenniskens 45 circular orbits 45 mineralogical composition 45 Auger Observatory 45 chondrites 45 Olympus Mons 45 Saturnian moon 45 moon Ganymede 45 Jupiter Saturn Uranus 45 Kepler Mission 45 waning gibbous 45 Herschel Space 45 celestial phenomena 45 constellation Auriga 45 elliptical galaxy NGC 45 volcanic moon Io 45 cosmos