Related by context. All words. (Click for frequent words.) 78 exoplanets 76 extrasolar planet 75 extrasolar planets 71 brown dwarf 71 brown dwarfs 70 HD #b [002] 70 planets orbiting 68 rocky planets 68 HD#b 68 planet orbiting 68 planets orbiting distant 67 super Earths 67 planets 67 Gliese #g 67 transiting planets 66 CoRoT 7b 66 habitable planets 66 Earthlike planets 66 extrasolar 65 Kepler #b 65 WASP #b 65 TrES 65 galaxy cluster 65 Corot 7b 65 Kuiper Belt object 64 GJ #b [001] 64 Earthlike planet 64 radial velocity 64 Sedna 64 transiting planet 63 quasars 63 microlensing 63 distant galaxy 63 Gliese #c 63 gravitational microlensing 63 terrestrial planets 63 gamma ray burst 63 exoplanetary 63 Epsilon Eridani 63 pulsars 63 Gliese #d 63 planet HD #b 63 supernova 63 planets orbiting stars 62 astronomers 62 X ray binary 62 Beta Pictoris b 62 astronomical objects 62 quasar 62 Milky Way galaxy 62 Orion Nebula 62 globular cluster 62 redshift 62 gamma ray bursts 62 galaxies 62 TrES 4 62 smallest exoplanet 61 globular clusters 61 CoRoT 9b 61 gaseous planet 61 GRB # 61 supernovae 61 star Gliese 61 GRB #B 61 Corot 9b 61 Eta Carinae 61 planemos 61 GRBs 61 galaxy 61 magnetar 61 SN #gy 61 distant galaxies 61 hot Jupiters 60 exoplanet orbiting 60 GJ#b 60 supernova remnant 60 Cancri 60 XMM Newton 60 radial velocity method 60 extrasolar planets orbiting 60 pulsar 60 faint galaxies 60 Fomalhaut b 60 potentially habitable planets 60 planets circling 60 distant supernovae 60 Epsilon Aurigae 60 Milky Way Galaxy 60 neutron star 60 Spitzer Space Telescope 60 KBOs 60 Type Ia supernova 60 exoplanets orbiting 60 OGLE 60 habitable zone 60 planetary nebulae 60 moon Charon 59 galaxy clusters 59 UDFy # 59 distant quasars 59 CoRoT 59 Earthlike 59 neutrino 59 elliptical galaxies 59 Cancri e 59 extrasolar planetary systems 59 dwarf galaxy 59 planet orbits 59 asteroid 59 Kuiper Belt Objects 59 red supergiant 59 G#.# +#.# 59 eclipsing binary 59 CoRoT satellite 59 COROT 59 Pluto Charon 59 neutron stars 58 HAT P 58 Enceladus 58 OGLE TR #b 58 Gliese 58 NASA Kepler spacecraft 58 elliptical galaxy 58 comet 58 Kuiper belt objects 58 AU Mic 58 metallicity 58 X ray wavelengths 58 icy moons 58 Andromeda Galaxy 58 extragalactic 58 exo planet 58 Kuiper belt 58 AGNs 58 planets orbiting sun 58 dwarf galaxies 58 starburst galaxies 58 protoplanetary disks 58 Oort cloud 58 hypervelocity stars 58 Omega Centauri 58 Crab Nebula 58 planet TrES 58 Kuiper belt object 58 habitable worlds 58 Beta Pictoris 58 supermassive black hole 57 protostar 57 Hubble observations 57 GALEX 57 gravitationally bound 57 celestial object 57 X ray emission 57 solar corona 57 UB# [003] 57 Kuiper Belt 57 moons orbiting 57 planet Gliese #g 57 comets 57 PSR J# 57 Wolszczan 57 planet Uranus 57 Kuiper Belt Object 57 Milky Way 57 Sasselov 57 axions 57 reionization 57 BLG #Lb 57 Andromeda galaxy 57 potentially habitable 57 Upsilon Andromedae 57 SN #A 57 earthlike planets 57 infrared wavelengths 57 active galactic nuclei 57 CoRoT #b 56 ULIRGs 56 Fermi telescope 56 fainter objects 56 Konacki 56 sunlike stars 56 millisecond pulsars 56 interstellar dust 56 protoplanetary disk 56 exo planets 56 NASA Kepler 56 Type Ia supernovae 56 GJ #b [002] 56 supernovas 56 merging galaxies 56 astrophysical 56 starburst galaxy 56 X ray observatories 56 Astronomers 56 BP Psc 56 innermost planet 56 nebula 56 Kepler 56 magnetars 56 habitable planet 56 supernova explosion 56 cosmic microwave background 56 planetoid 56 galaxy M# [002] 56 spectroscopic observations 56 luminous galaxies 56 Quaoar 56 stellar nurseries 56 Antennae Galaxies 56 Gliese #e 56 gravitational wave 56 gravitational waves 56 comet nucleus 56 distant quasar 55 inhabitable planets 55 CMB radiation 55 VB #b 55 millisecond pulsar 55 galaxy NGC 55 spectroscopic 55 planetary nebula 55 accretion disk 55 solar nebula 55 Large Magellanic Cloud 55 Wolf Rayet stars 55 distant galaxy clusters 55 Kuiper Belt objects 55 Solar System 55 ESA XMM Newton 55 planets astronomers 55 transiting exoplanet 55 cosmological distances 55 spiral galaxies 55 Proxima Centauri 55 Zeta Ophiuchi 55 type Ia supernovae 55 J# +# [002] 55 supergiant star 55 HARPS spectrograph attached 55 X ray binaries 55 Comet Hartley 2 55 protostars 55 trans Neptunian objects 55 WIMPs 55 transiting exoplanets 55 Saturnian moon 55 gravitational lenses 55 Goldilocks planet 55 galaxy formation 55 Comet Lulin 55 AB Aurigae 55 Milky Way halo 55 exosolar planets 55 extrasolar planetary 54 elliptical orbits 54 Saturn moons 54 habitable zones 54 gamma ray observatory 54 stellar occultations 54 NASA Wilkinson Microwave 54 radial velocity technique 54 XO 3b 54 planetary astronomy 54 Higgs bosons 54 X ray telescopes 54 dwarf planet 54 GRB 54 occultations 54 Comet Holmes 54 Toutatis 54 nebular 54 WMAP satellite 54 Fomalhaut 54 Galilean moons 54 Saturn moon 54 Arches Cluster 54 blazar 54 intrinsic brightness 54 Oort Cloud 54 Higgs particle 54 Exoplanet 54 gravitational lensing 54 phyllosilicates 54 WM Keck Observatory 54 comets orbiting 54 Comet Hale Bopp 54 Martian meteorites 54 planetary 54 ray Space Telescope 54 WMAP 54 Hanny Voorwerp 54 optical telescopes 54 Pluto Eris 54 microlensing events 54 sunlike star 54 Microlensing 54 asteroids 54 redshifts 54 sized planets orbiting 54 OGLE TR 54 astrophysicists 54 UVOT 54 meteorites 53 BLG #L 53 nebulae 53 protoplanet 53 NASA Chandra 53 gaseous planets 53 RXTE 53 X ray observatory 53 P/# A2 53 ejecta 53 Triangulum Galaxy 53 smallest extrasolar planet 53 ESO VLT 53 HD# [002] 53 X ray Observatory 53 HL Tau 53 substorm 53 NASA Fermi Gamma 53 Hot Jupiters 53 SIRTF 53 planet transits 53 Galaxy Evolution 53 stellar occultation 53 asteroidal 53 NASA Cassini spacecraft 53 spectroscopically 53 Cepheids 53 astrometry 53 COROT 7b 53 Keck telescope 53 astronomer 53 sunspot 53 exoplanets planets 53 brightest supernova 53 Jupiter moon Io 53 cosmic ray 53 Wolf Rayet star 53 red supergiants 53 planet HD#b 53 planetary transits 53 Pluto 53 constellation Hercules 53 quark gluon plasma 53 Virgo Cluster 53 Geminids 53 photosphere 53 HD #b [001] 53 Planck satellite 53 Super Earths 53 Small Magellanic Cloud 53 constellation Virgo 53 Mauna Kea Hawaii 53 Galilean satellites 53 photometry 53 cosmic microwave radiation 53 interstellar cloud 53 Saturn moon Enceladus 53 gravitational lens 53 Upsilon Andromedae b 52 magma ocean 52 globulars 52 BP Piscium 52 Hawking radiation 52 SN #C 52 Mandushev 52 orbits 52 planets Kepler 52 hydrated minerals 52 Optical Gravitational Lensing Experiment 52 noctilucent clouds 52 supermassive black holes 52 mu Arae 52 eclipsing binaries 52 Saturn rings 52 supernova explosions 52 Comet Hartley 52 ESO PR 52 galactic mergers 52 Keck Interferometer 52 occultation 52 ringed planet 52 nucleosynthesis 52 NEAs 52 XTE J# 52 CRISM 52 gravitational radiation 52 Quadrantids 52 Delta Cephei 52 submillimeter 52 Space Telescope 52 neutrinos 52 baryon 52 Magellanic Clouds 52 TW Hydrae 52 cometary 52 spectroscopic measurements 52 circumstellar disks 52 Coma Cluster 52 subatomic particle 52 Pegasi 52 Cosmic Microwave Background 52 moon Enceladus 52 constellation Cassiopeia 52 GRB# 52 #gy 52 barred spiral galaxy 52 SN #E 52 spiral galaxy 52 infrared spectra 52 Geminga 52 infrared radiation 52 V# Mon 52 Astrophysical Journal 52 microquasar 52 GRB #A 52 LORRI 52 Wilkinson Microwave Anisotropy Probe 52 SN#A 52 telescopes 52 Cepheid variables 52 infrared observatory 52 exosphere 52 GQ Lupi 52 Venusian atmosphere 52 celestial objects 52 coronagraph 52 Red Rectangle 52 #P/Churyumov-Gerasimenko 52 supersymmetric particles 52 Eridani 52 Gamma ray bursts 52 moons Phobos 52 planetary Transits 52 constellation Ursa Major 52 axion 52 Hipparcos 51 Evolution Explorer 51 HIP #b 51 Comet Machholz 51 circumstellar disk 51 Cassini spacecraft 51 Kepler telescope 51 Stephan Quintet 51 TNOs 51 Betelgeuse 51 constellation Centaurus 51 RRATs 51 Very Large Telescope 51 fainter 51 galaxy M# [001] 51 Virgo cluster 51 Planck 51 VIRTIS 51 sun corona 51 orbiting Hubble Space Telescope 51 Mpc 51 type Ia supernova 51 interstellar medium 51 neutralino 51 RS Ophiuchi 51 magnetic reconnection 51 Goldilocks zone 51 spatially resolved 51 Exoplanets 51 missing baryons 51 Ulysses spacecraft 51 Perseus Cluster 51 Anisotropy Probe WMAP 51 Saturn magnetosphere 51 elongated orbits 51 HIRES spectrometer 51 giant elliptical galaxy 51 boson 51 APXS 51 cluster NGC 51 intracluster 51 Pieter van Dokkum 51 Comet Halley 51 HARPS 51 Henize #-# 51 Cassini Huygens 51 Jovian moon 51 moonlet 51 supersymmetric 51 hypervelocity star 51 moon Titan 51 moonlets 51 attosecond 51 infrared telescope 51 perihelion 51 comet McNaught 51 Higgs boson 51 astronomical observations 51 Comet McNaught 51 neutralinos 51 Hale Bopp 51 Extrasolar planets 51 star Proxima Centauri 51 dwarf planets 51 SOHO spacecraft 51 binary asteroid 51 RHESSI 51 X ray pulses 51 Gravitational waves 51 spiral galaxy NGC 51 Cassini 51 SDSS II 51 infrared telescopes 51 asteroid Vesta 51 Earth asteroids 51 proplyds 51 adaptive optics 51 spectra 51 Christophe Lovis 51 Type Ia 51 orbited Jupiter 51 planets orbits 51 highly elliptical orbits 51 electron neutrinos 51 constellation Aquarius 51 Higgs Boson 51 outer planets 51 X ray telescope 51 planet WASP #b 51 blazars 51 muon 51 chondrites 51 lunar crust 51 ESO Very Large Telescope 51 telescope 50 retrograde orbits 50 supergiant stars 50 ultraviolet wavelengths 50 Supernova #A 50 lensing galaxy 50 constellation Carina 50 God Particle 50 Bug Nebula 50 Explorer WISE 50 moon Io 50 Galileo spacecraft 50 CfA 50 NASA Far Ultraviolet 50 Keck telescopes 50 Sara Seager 50 spectroscopy 50 constellation Libra 50 exoplanetary systems 50 cosmic rays 50 supernova remnants 50 interferometry 50 Very Large Array 50 Tarantula Nebula 50 rocky terrestrial planets 50 asteroid belt 50 carbonaceous chondrites 50 planet Gliese #c 50 tau neutrinos 50 Cosmic Microwave Background CMB 50 infall 50 ionized gas 50 heliosphere 50 Halley comet 50 retrograde orbit 50 Ring Nebula 50 star Fomalhaut 50 interacting galaxies 50 Gamma ray burst 50 nicknamed Xena 50 R Coronae Borealis 50 Cygnus X 50 SDSS 50 substorms 50 planet 50 constellation Pegasus 50 Lutetia 50 high redshift galaxies 50 optical wavelengths 50 magnetosphere 50 Orionids 50 gamma rays 50 asteroseismology 50 HiRISE camera 50 largest moon Charon 50 VLTI 50 aurorae 50 COROT exo 3b 50 Astrophysical Journal Letters 50 Hubble Space Telescope HST 50 Kepler 9c 50 asteroid Ceres 50 Orbiter LRO 50 comet Wild 50 Haumea 50 RX J# 50 EPOXI 50 lightest exoplanet 50 RQ# 50 rocky extrasolar planet 50 Lyman alpha 50 ESO telescope 50 energetic cosmic rays 50 Orion nebula 50 elongated orbit 50 interstellar dust grains 50 Hubble Ultra 50 orbiting 50 meteoroids 50 Keck Telescope 50 globular star 50 Kepler spacecraft 50 gamma ray flares 50 R#a# 50 subsurface ocean 50 dust enshrouded 50 Saturn Enceladus 50 Cassini ion 50 extraterrestrial civilizations 50 gamma ray 50 HiRISE 50 2MASS 50 cometary material 50 eccentric orbits 50 Iapetus 50 afterglows 50 Eagle Nebula 50 WHIM 50 SUSY 50 astrophysical objects 50 Lagoon Nebula 50 Giovanni Cassini 50 bolometers 50 NASA Kepler telescope 50 Fermi LAT 50 polar vortex 50 NGC# 50 plutoids 50 Fermi Gamma ray 50 Uranus Neptune 49 auroral 49 brightnesses 49 SCP #F# 49 foreground galaxy 49 blue supergiant 49 magnetospheric 49 novae 49 plutoid 49 colliding galaxies 49 constellation Lyra 49 Mimas 49 sunspots 49 ESA Integral 49 supernova SN 49 galactic cosmic rays 49 supermassive 49 Herschel Space 49 solar flares 49 NanoSIMS 49 interstellar molecules 49 VY Canis Majoris 49 asteroids comets 49 planets circling stars 49 SIM PlanetQuest 49 spectrographs 49 unaided eye 49 gamma ray emission 49 z ~ 49 Voyager spacecraft 49 Bose Einstein condensate 49 Convection Rotation 49 moon Mab 49 SINFONI 49 Cassini flyby 49 mesosphere 49 galactic 49 Mössbauer 49 Higgs boson particle 49 Jenniskens 49 moons 49 Comet Elenin 49 planetesimals 49 Kepler Space Telescope 49 distant supernovas 49 CAIs 49 moon Europa 49 detect gravitational waves 49 SN #D 49 HUDF 49 lunar perigee 49 Astrophysicists 49 ALH# 49 filamentary structure 49 Avi Loeb 49 shorter wavelengths 49 luminosities 49 Hubble Space Telescope 49 William Borucki 49 GeV 49 occulted 49 Maunder minimum 49 Meridiani 49 Mini TES 49 celestial sphere 49 Dwarf Planet 49 IRC +# 49 celestial bodies 49 spiral nebulae 49 accretion disks 49 Cepheid variable 49 exoplanets planets outside 49 HiRISE image 49 VLBA 49 cosmic phenomena 49 Viking landers 49 Alfvén waves 49 Filippenko 49 Nasa spacecraft 49 exciton 49 planetoids 49 Helix nebula 49 superfluidity 49 constellation Sagittarius 49 superfluid 49 Astrophysical Institute 49 arcminutes 49 pentaquark 49 Sagittarius B2 49 extrasolar worlds 49 moon Ganymede 49 Earths 49 NICMOS 49 Kepler Mission 49 Churyumov Gerasimenko 49 submillimeter galaxies 49 neutral mass spectrometer 49 neutrino particles 49 galactic nuclei 49 biosignatures 49 jovian 49 visible wavelengths 49 magnetic monopoles 49 exoplanet hunter 49 astrophysical phenomena 49 Gravitational lensing 49 Martian surface 49 permanently shadowed craters 49 Earth magnetosphere 49 Astrophysical 49 Lyrids 49 theoretical particle 49 Uranus 49 Herschel Space Telescope 49 ionospheric 49 baryons 49 masers 49 planets Uranus 49 astrobiologists 48 elliptical galaxy NGC 48 cosmic cannibal 48 Titan Saturn 48 galactic bulge 48 NASA Lunar Reconnaissance 48 infrared astronomy 48 Jupiter moons 48 olivine 48 Puppis 48 orbital resonance 48 telescopes astronomers 48 supergiant 48 infrared interferometry 48 MG J# +# 48 lunar craters 48 Cassiopeia 48 Mamajek 48 neutrino mass 48 gravitationally 48 geoneutrinos 48 Bok globules 48 protoplanets 48 Voorwerp 48 silicates 48 Bose Einstein condensates 48 Earths orbiting 48 Mars Reconnaissance Orbiter 48 Magnetars 48 Cat Paw Nebula 48 asteroids orbiting 48 Saturnian 48 KH #D 48 cosmologists 48 Hubble Constant 48 PZ Tel 48 carbonate minerals 48 Anisotropy Probe 48 constellation Taurus 48 infrared imager 48 infrared 48 Gehrels 48 Jovian moons 48 magnetospheres 48 HM Cancri 48 interstellar clouds 48 ultracold atoms 48 photon 48 superheavy elements 48 Bullet Cluster 48 organic molecules 48 polar regions 48 observable universe 48 magnetotail 48 Pegasus constellation 48 Gondolo 48 UKIRT 48 J#.# [001] 48 gravitational interactions 48 perigee 48 De Pontieu 48 SNR #-#.# 48 Astrophysics Cambridge Mass. 48 Submillimeter Array 48 sodium atoms 48 Trojan asteroids 48 galactic disk 48 Wide Angle Search 48 #P/Holmes 48 Kailash Sahu 48 gamma ray photons 48 Astrophysics 48 zodiacal light 48 cometary dust 48 outermost planets 48 Epsilon Indi 48 Scheila 48 starlight 48 maser emission 48 orbiting telescope 48 sulfur isotope 48 Samuel Oschin Telescope 48 HARPS instrument 48 XMM Newton satellite 48 inner asteroid belt 48 HiRISE camera aboard 48 galactic clusters 48 Crab Pulsar 48 planetary astronomer 48 periodic dimming 48 spacecraft flyby 48 chondrules 48 silicon monoxide 48 photometer 48 hydrogen atom 48 star Beta Pictoris 48 telescopic observations 48 asterism 48 stellar seismology 48 heavily cratered 48 Leonids 48 Planck spacecraft 48 LOFAR 48 Extrasolar Planet Search 48 Mercury flyby 48 PASADENA Calif. Astronomers 48 X ray afterglow 48 galaxies collide 48 S/# P2 48 Hubble 48 Machholz 48 quark 48 Carina Nebula 48 Adam Riess 48 troposphere 48 Using ESO Very 48 Alpha Centauri 48 pseudogap 48 Huygens mission 48 cryovolcanism 48 Paranal Observatory 48 polar stratospheric 48 optical spectra 48 aphelion 48 STEREO spacecraft 48 martian meteorites 48 Itokawa 47 photons 47 subatomic particles 47 muon neutrinos 47 sterile neutrino 47 constellation Cygnus 47 ionized hydrogen 47 astronomer Clyde Tombaugh 47 Planetary Transits 47 Makemake 47 redshifted 47 astrobiological 47 Nasa Kepler 47 active galactic nucleus 47 Dumbbell Nebula 47 WFC3 47 constellation Perseus 47 Gal Yam 47 Comet #P/Churyumov-Gerasimenko 47 extrasolar planet HD #b 47 lunar poles 47 meteoroid 47 SNfactory 47 orbiting observatory 47 Type 1a supernovae 47 Spitzer infrared telescope 47 Telescope BAT 47 dynamical 47 Mojzsis 47 atoms 47 elemental composition 47 HD# [005] 47 GROND 47 ionised gas 47 binary quasar 47 -# degrees Fahrenheit [002] 47 chemical abundances 47 RY Sagittarii 47 X ray emitting 47 carbonaceous chondrite 47 Mercury magnetosphere 47 reflection nebula 47 XMM Newton observations 47 Grillmair 47 interstellar dust particles 47 mineralogical composition 47 outermost planet 47 high temperature superconductors 47 isotopic 47 Diviner 47 orbiting Cassini spacecraft 47 antiparticle 47 Science Experiment HiRISE 47 Heterodyne Instrument 47 QQ# 47 strange quark 47 neutrino beam 47 Caltech astronomer 47 Saturnian moon Titan 47 Fornax cluster 47 ultraluminous galaxy 47 Wolfgang Brandner 47 planet gravitational tug 47 diffuse aurora 47 Interstellar Boundary Explorer 47 geomagnetic 47 millimeter wavelengths 47 HII regions 47 polarimetry 47 Bruce Jakosky 47 Dwarf galaxies 47 radio occultation 47 Saturn aurora 47 general relativity 47 Saturn Cassini 47 volcanically active 47 celestial phenomena 47 Cerro Paranal 47 comet Hale Bopp 47 zodiacal dust 47 planethood 47 orbiting Mars 47 Tarduno 47 baryonic 47 Type Ia supernovas 47 infrared spectrograph 47 spacetime 47 antineutrinos 47 icy comets 47 emission nebula 47 NASA Cosmic Background 47 Martian polar 47 cosmic dust 47 astronomy 47 Triangulum 47 astrometric 47 moons Europa 47 relativistic jets 47 cosmological observations 47 constellation Ophiuchus 47 high temperature superconductivity 47 globular cluster M# 47 Lunokhod 47 accreting 47 Earth radii 47 solar radii 47 Active Galactic Nuclei 47 interstellar dust clouds 47 journal Icarus 47 optical microscopy 47 Stephane Udry 47 Cosmologists 47 Charon Pluto 47 active volcanism 47 Heliospheric Observatory SOHO