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(Click for frequent words.) 70 planets 62 celestial objects 61 cosmos 61 comets 61 planets orbits 60 exoplanetary 60 KBOs 60 celestial 59 exosolar planets 59 extrasolar planets 59 extrasolar 59 planetary orbits 59 planets comets 59 planemos 58 planet Uranus 58 Galilean moons 58 Upsilon Andromedae 58 planets moons 58 planets orbiting 58 distant galaxies 58 asteroids 58 comets asteroids 58 astronomical phenomena 57 Earthlike planets 57 Galilean satellites 57 distant supernovae 57 exo planets 57 Gravitational waves 57 Jovian moons 57 habitable planets 57 moons 56 astrophysical phenomena 56 trans Neptunian objects 56 Epsilon Eridani 56 cosmological distances 56 planets orbiting stars 56 transiting planets 56 icy moons 56 constellations 56 astronomers 56 dirty snowballs 56 planetary 56 asteroids comets 56 Kuiper belt objects 56 rocky planets 56 luminous galaxies 56 galaxies 56 Higgs bosons 56 inhabitable planets 56 photosphere 56 exoplanets planets 55 elliptical orbits 55 astronomical objects 55 jovian 55 outer planets 55 planetoids 55 Antennae Galaxies 55 earthlike planets 55 radial velocity 55 gravitational lenses 55 spectroscopic measurements 55 Solar System 55 exoplanets orbiting 55 galaxy M# [001] 55 exoplanets 55 celestial object 55 phyllosilicates 55 astronomical observations 55 earthshine 55 planets orbiting distant 55 celestial sphere 55 cosmic 55 elongated orbits 55 Kuiper Belt Objects 55 elliptical galaxies 55 subatomic particles 55 comet nucleus 55 axions 55 merging galaxies 55 celestial mechanics 55 cosmic phenomena 55 eclipsing binaries 54 interstellar dust grains 54 OGLE TR #b 54 permanently shadowed craters 54 Saturn rings 54 orbits 54 Cepheid variables 54 Oort Cloud 54 Kuiper belt 54 Milky Way 54 magnetars 54 neutralinos 54 occultations 54 Andromeda Galaxy 54 zodiac constellations 54 intrinsic brightness 54 Jupiter Saturn 54 retrograde orbit 54 GJ #b [001] 54 planets asteroids 54 Trojan asteroids 54 Hot Jupiters 54 Toutatis 54 lunar craters 54 retrograde orbits 54 supersymmetric particles 54 comet 54 coronal loops 54 KH #D 53 nebulae 53 distant quasars 53 sized planets orbiting 53 faraway galaxies 53 galaxy 53 extrasolar planetary systems 53 planetary alignments 53 globular clusters 53 orbiting planets 53 Epsilon Aurigae 53 sunlike stars 53 astrometry 53 microlensing events 53 Corot 7b 53 polar caps 53 Henize #-# 53 spiral galaxies 53 Andromeda galaxy 53 mu Arae 53 Fomalhaut b 53 Oort cloud 53 galactic clusters 53 Milky Way Galaxy 53 comet nuclei 53 distant galaxy 53 gaseous planets 53 galaxy clusters 53 unobservable 53 proplyds 53 quasars 53 Beta Pictoris b 53 gaseous planet 53 astrophysical 53 mineralogical composition 53 observable universe 53 GJ#b 53 spiral nebulae 53 moons Phobos 53 Orionid 53 Orion Nebula 53 detect gravitational waves 53 gravitational microlensing 53 supernovas 53 Saturnian moons 53 chemical abundances 53 ecliptic 53 Sedna 53 Uranus 53 eclipsing binary 52 constellation Ursa Major 52 TNOs 52 Martian craters 52 millisecond pulsars 52 circular orbits 52 Delta Cephei 52 P/# A2 52 solstices 52 neutron stars 52 radial velocity technique 52 Earth magnetosphere 52 extrasolar planets orbiting 52 Saturn moons 52 planet Gliese #c 52 gravitationally bound 52 Corot 9b 52 transiting planet 52 astrophysical objects 52 Kuiper Belt objects 52 terrestrial planets 52 Kuiper Belt 52 X ray telescopes 52 Saturnian 52 meteoroids 52 Pluto Eris 52 Weakly Interacting Massive Particles 52 Omega Centauri 52 Jupiter Saturn Uranus 52 occultation 52 planetary nebulae 52 gravitational waves 52 moon Charon 52 gravitational perturbations 52 plutoids 52 Pluto Charon 52 moon Io 52 protoplanetary disks 52 planetary embryos 52 dwarf galaxies 52 extrasolar worlds 52 HD#b 52 Earthlike 52 CoRoT satellite 52 magnetic fields 52 icy comets 52 COROT 52 brown dwarfs 52 lunar poles 52 galactic magnetic 52 masers 52 magnetic monopoles 52 HD #b [002] 52 cosmological theories 51 GRBs 51 lensing galaxy 51 dynamical evolution 51 AGNs 51 innermost planet 51 pulsars 51 cometary impacts 51 Comet Halley 51 SN#A 51 moons circling 51 nebular 51 Milky Way galaxy 51 aurorae 51 star Gliese 51 Voyager spacecraft 51 Higgs particle 51 Hubble Constant 51 HM Cancri 51 Alfven waves 51 spacetime 51 Uranian 51 gravitational lensing 51 Astrophysicists 51 interstellar cloud 51 Coma Cluster 51 Saturnian moon Titan 51 noctilucent clouds 51 APXS 51 sidereal 51 proto planetary disk 51 habitable worlds 51 Exoplanets 51 baryons 51 celestial phenomena 51 occulted 51 stellar seismology 51 Cosmic Microwave Background 51 gravitational lens 51 Magellanic Clouds 51 Quadrantids 51 gamma ray bursts 51 planets astronomers 51 millisecond pulsar 51 hot Jupiters 51 globulars 51 sunspots 51 supernovae 51 WASP #b 51 binary asteroid 51 asterism 51 Saturnian moon 51 Io Europa 51 stellar occultations 51 orbital resonance 51 Haumea 51 cosmological parameters 51 NEAs 51 proto galaxies 51 asteroid 51 extragalactic 51 Higgs Boson particle 51 Pleiades star 51 singularities 51 ecliptic plane 50 planetary nebulas 50 rotational axis 50 Carina constellation 50 Anisotropy Probe WMAP 50 protoplanet 50 Cancri e 50 Spitzer infrared spectrograph 50 orbital inclination 50 planet orbiting 50 Comet Lulin 50 AB Aurigae 50 atomic particles 50 magnetic polarity 50 planets orbiting sun 50 solar nebula 50 X ray wavelengths 50 moonlets 50 highly elliptical orbits 50 Saturn moon 50 baryon 50 planetoid 50 radial velocity method 50 heliosphere 50 supernova explosion 50 planetary atmospheres 50 Saturn Enceladus 50 Kepler 9c 50 Kuiper Belt Object 50 Saturn magnetosphere 50 astronomy 50 star Proxima Centauri 50 objects 50 lunar surface 50 hydrostatic equilibrium 50 heavily cratered 50 galaxy cluster 50 accretion disks 50 HD# [002] 50 telescopic observations 50 exosphere 50 gravitational pulls 50 radial velocities 50 microlensing 50 supersymmetric 50 active galactic nuclei 50 Orionids 50 Comet Holmes 50 STEREO spacecraft 50 Diviner 50 Enceladus 50 extrasolar planet 50 COROT exo 3b 50 outermost planets 50 planet transits 50 planetary surfaces 50 VIRTIS 50 Manned missions 50 antimatter particles 50 eccentric orbits 50 constellation Eridanus 50 Jupiter Uranus 50 Maxwell equations 50 Cepheids 50 Mercury magnetosphere 50 distant suns 50 CMEs 50 filamentary structure 50 sterile neutrino 50 Hale Bopp 50 Martian meteorites 50 asteroidal 50 magnetosphere 50 gravitational 50 Saturn Cassini 49 quark gluon plasma 49 planets Uranus 49 AU Mic 49 cosmological 49 cosmic microwave background 49 Higgs boson particle 49 Perseus Cluster 49 WIMPs 49 periodic dimming 49 exo planet 49 spacecraft flyby 49 constellations planets 49 Gliese #d 49 Methone 49 planet orbits 49 faintest galaxies 49 fainter objects 49 Halley comet 49 earths 49 Kuiper belt object 49 extraterrestrial civilizations 49 solar corona 49 habitable zones 49 protoplanetary disk 49 Proxima Centauri 49 Earth 49 Hipparcos 49 circumstellar disks 49 lunar crust 49 Ring Nebula 49 Crab Nebula 49 planet magnetosphere 49 Astronomers 49 Evolution Explorer 49 subsurface ocean 49 millimeter wavelengths 49 Heisenberg uncertainty principle 49 constellation Virgo 49 antineutrinos 49 comet Lulin 49 universe 49 Earthlike planet 49 magnetar 49 Venusian 49 perihelion 49 Geminga 49 constellation Leo 49 exoplanet 49 COROT 7b 49 GQ Lupi 49 substorms 49 universal gravitation 49 astrophysicists 49 Comet Machholz 49 atoms 49 gravitational redshift 49 comets meteors 49 Hipparchus 49 Neptune Uranus 49 Red Rectangle 49 planets atmospheres 49 satellites orbiting Earth 49 red supergiants 49 BLG #Lb 49 constellation Taurus 49 Itokawa 49 Martian surface 49 Bok globules 49 quantum particles 49 solar flares 49 moon 49 macroscopic objects 49 Vedic astrology 49 asteroseismology 49 cosmic rays 49 biosignatures 49 Comet Tempel Tuttle 49 Muchachos Observatory 49 orbiting 49 distant quasar 49 Gliese #c 49 Pleiades 49 J# +# [002] 49 Earth asteroids 49 gravitational wobbles 49 CoRoT 9b 49 general relativity 49 momenta 49 Red Planet 49 meteor impacts 49 interstellar dust 49 chondrites 49 Apophis asteroid 49 submillimeter galaxies 49 heliocentric 49 faraway planets 49 mythological beings 49 galactic cosmic rays 49 assumed planets circling 49 cometary debris 49 magnetotail 49 optical wavelengths 49 Jupiter moon Io 49 Quaoar 49 galactic collisions 49 Helix Nebula 49 comets orbiting 49 SN #A 49 planet Gliese #g 49 gravitational interaction 48 meteorites 48 Einstein theory 48 polar craters 48 lunar perigee 48 gravity warps 48 outer corona 48 planetary Transits 48 intelligent beings 48 starburst galaxies 48 circumstellar disk 48 X ray observatory 48 cosmic ray 48 VY Canis Majoris 48 Meteorites 48 Kuiper Belt object 48 moon gravitational pull 48 Magnetars 48 comet Tempel Tuttle 48 planets circling 48 Milankovitch cycles 48 GJ #b [002] 48 stellar nurseries 48 moons orbiting 48 mathematician Pythagoras 48 interplanetary spacecraft 48 magnetic reconnection 48 planetary conjunctions 48 Saturn aurora 48 plutoid 48 CoRoT #b 48 asteroid belt 48 NASA Cassini 48 Comet Elenin 48 asteroid Vesta 48 galaxy M# [002] 48 constellation Aquarius 48 landforms 48 Kepler #b 48 cosmologists 48 planets constellations 48 superfluids 48 infrared telescopes 48 protostars 48 galactic disk 48 beings 48 constellation Carina 48 Pleiades cluster 48 quantum electrodynamics 48 moon Mimas 48 gravitational attraction 48 Earthshine 48 interstellar space 48 XMM Newton 48 comets moons 48 supermassive 48 Solar Orbiter 48 Gliese #e 48 pulsar 48 gravitational interactions 48 Fermi telescope 48 Milky Way halo 48 galactic cores 48 baryonic matter 48 starquakes 48 fundamental constants 48 polar mesospheric clouds 48 spacecraft orbiting 48 moons Io 48 impactors 48 dust devils 48 outer space 48 TW Hydrae 48 Cancri 48 MG J# +# 48 Jupiter moons 48 spatially resolved 48 Cosmologists 48 visible wavelengths 48 elliptical orbit 48 Hubble observations 48 ringed planet 48 Corona Australis 48 observational astronomy 48 Eagle Nebula 48 neutrino mass 48 colliding galaxies 48 superheavy elements 48 atomic nuclei 48 dwarf spheroidal galaxies 48 nucleosynthesis 48 equinoxes 48 neutron star 48 novae 48 super Earths 48 CoRoT 7b 48 galactic 48 ejecta 48 meteoritic material 48 interstellar medium 48 celestial equator 48 Mars 48 NASA Wilkinson Microwave 48 sundials 48 Comet Hale Bopp 48 neutrinos 48 Beta Pictoris 48 alien civilizations 48 VLBA observations 48 interstellar boundary 48 Einstein theories 48 Solar Terrestrial Relations 48 spatial dimensions 48 ULIRGs 48 Maunder minimum 48 TGFs 47 auroral displays 47 meteors 47 supernovae explode 47 Type Ia supernovas 47 dwarf planets 47 constellation Centaurus 47 spectral fingerprints 47 angelic beings 47 quantum superposition 47 lunar orbits 47 substorm 47 interstellar particles 47 geomagnetic 47 axial tilt 47 astrolabes 47 Herschel Space 47 nebulas 47 proto planetary disks 47 Jovian moon 47 constellation Hercules 47 Syrtis Major 47 ultraviolet wavelengths 47 galactic cosmic ray 47 magnetic monopole 47 Ultraviolet Imaging Spectrograph 47 interstellar dust clouds 47 planetary transits 47 equinox 47 lunar equator 47 Comet Tempel 1 47 Martian dust 47 Earths 47 ultracold atoms 47 protoplanets 47 protoplanetary 47 vortexes 47 smallest exoplanet 47 God Particle 47 tau neutrinos 47 Virgo Cluster 47 interstellar clouds 47 Wolf Rayet stars 47 galactic mergers 47 Nibiru 47 astronomer Johannes Kepler 47 geoid 47 abiogenesis 47 intracluster 47 magnetospheric 47 slender crescent 47 orbital eccentricity 47 constellation Sagittarius 47 Mercury Uranus 47 zodiacal light 47 protoplanetary discs 47 UCO Lick 47 Relations Observatory STEREO 47 distant supernovas 47 Halley Comet 47 Gemini constellation 47 WMAP 47 sterile neutrinos 47 planets circling stars 47 binary asteroids 47 Gliese #g 47 Mars Phobos 47 comet Churyumov Gerasimenko 47 redshifts 47 landmasses 47 cosmology 47 PSR J# 47 auroral emissions 47 Optical Gravitational Lensing Experiment 47 geostationary orbits 47 Globular clusters 47 Cassini 47 constellations Cygnus 47 subatomic 47 Pythagoreans 47 galactic halo 47 cosmic collisions 47 Shackleton crater 47 Mini TES 47 BLG #L 47 Mars Uranus 47 Explorer WISE 47 Venus transits 47 optical interferometry 47 constellation Perseus 47 type Ia supernova 47 quantum mechanics 47 alien beings 47 Lagrangian 47 Gravitational lensing 47 Cassini spacecraft 47 nebula 47 Solar TErrestrial RElations Observatory 47 Saturn Uranus 47 S/# P2 47 spiral galaxy 47 gamma ray photons 47 SN #gy 47 Upsilon Andromedae b 47 prebiotic molecules 47 submicroscopic 47 cosmic cannibal 47 Butterfly Nebula 47 waxing gibbous moon 47 distant galaxy clusters 47 blazars 47 reflection nebula 47 Comet Hartley 2 47 moon Europa 47 NASA Voyager spacecraft 47 HIRES spectrometer 47 telescopes 47 weakly interacting 47 ancient Babylonians 47 Earths orbiting 47 Cosmic rays 47 ancients 47 globular cluster 47 diffraction patterns 47 hematite mineral 47 Astrophysics Cambridge Mass. 47 potentially habitable planets 47 galaxy redshift 47 quantum particle 47 RHESSI 47 SDSS II 47 Cassini flyby 47 massless particles 47 Muons 47 nebulosity 47 faint galaxies 47 orbiting Hubble Space Telescope 47 chondrules 47 isotopic ratios 47 Planets 47 Voorwerp 47 constellation Ophiuchus 47 Wolszczan 47 planet HD #b 47 NASA ICESat 47 planet Nibiru 47 asteroid collisions 47 stellar occultation 47 relativity theory 47 Cydonia region 47 Comet Hartley 47 Keck telescopes 47 habitable planet 47 elemental abundances 47 spherically symmetric 47 cometary material 47 wavefunction 47 ULP cepheids 47 periodicities 47 Neutron stars 46 bedrock outcropping 46 Large Magellanic Cloud 46 Fermions 46 albedo reflectivity 46 Type Ia supernovae 46 orbited Jupiter 46 Veil Nebula 46 Cygnus Lyra region 46 Cometary 46 luminosity 46 Kepler Telescope 46 hadrons 46 Churyumov Gerasimenko 46 circumstellar 46 gamma ray observatory 46 dwarf galaxy 46 heliospheric 46 particle acceleration 46 orbiting Chandra 46 R Coronae Borealis 46 RRATs 46 prograde 46 meteoroid 46 planetesimals 46 coronagraph 46 AUs 46 nucleon 46 Nasa spacecraft 46 Elenin 46 hydrated minerals 46 Galileo spacecraft 46 SOHO spacecraft 46 HARPS instrument 46 comet Hale Bopp 46 Supernovae 46 #P/Churyumov-Gerasimenko 46 photometry 46 cosmological observations 46 Crab Pulsar 46 luminosities 46 Gamma ray bursts 46 starburst galaxy 46 Elliptical galaxies 46 galaxy NGC 46 Io Europa Ganymede 46 Gusev crater 46 dust enshrouded 46 cosmological models 46 moon Ganymede 46 moons Europa 46 gibbous 46 Cosmic Microwave Background CMB 46 neutrino 46 GALEX 46 Noctilucent clouds 46 BP Psc 46 OGLE 46 Wilkinson Microwave Anisotropy Probe 46 cosmogony 46 HiRISE image 46 extraterrestrial 46 brightnesses 46 GRB #B 46 RS Ophiuchi 46 Trapezium 46 Iapetus 46 ESA Integral 46 magnetic substorms 46 zodiacal constellations 46 supernovae explosions 46 compass needle 46 Galaxy Evolution 46 coronal heating 46 collisional 46 Alfvén waves 46 Zeta Ophiuchi 46 Fornax cluster 46 celestial beings 46 Coma cluster 46 tholins 46 bosons 46 Heliospheric Observatory SOHO 46 foreground galaxy 46 Cat Paw Nebula 46 SMBHs 46 Europa Ganymede 46 antiparticle 46 Horsehead Nebula 46 gamma rays emitted 46 giant gaseous planets 46 Climate Experiment GRACE 46 atomic nucleus 46 RXTE 46 Great Orion Nebula 46 homochirality 46 astral 46 Geminid meteors 46 particle analyzers 46 constellation Lyra 46 Venusian atmosphere 46 SUSY 46 astronomer 46 VLTI 46 airglow 46 Sagittarius dwarf galaxy 46 comet orbit 46 YORP effect 46 Hubble Telescope 46 SNR #-#.# 46 interstellar molecules 46 observable phenomena 46 spacecrafts 46 polarimetry 46 quantum entanglement 46 interacting galaxies 46 gravitational tugs 46 energetic cosmic rays 46 Mimas 46 ESO VLT 46 Planck telescope 46 meteorite impacts 46 transiting exoplanets 46 Supernova #A 46 constellation Cassiopeia 46 NASA Cassini spacecraft 46 hexagonal mirrors 46 Extrasolar planets 46 YU# 46 constellation Andromeda 46 Tycho Brahe 46 accretion disk 46 Cassini radar 46 gravitational radiation 46 lepton 46 WMAP satellite 46 optical spectra 46 exoplanetary systems 46 Newtonian gravity 46 Exoplanet 46 planet 46 gamma ray emitting 46 NGC #A 46 neutrino particles 46 OGLE TR 46 corona 46 supersymmetry 46 martian surface 46 electroweak 46 Rossby waves 46 comet hurtling 46 archons 46 asteroids orbiting 46 microphysical 46 Dwarf galaxies 46 GRB # 46 astronomer Ptolemy 46 Cassini imaging 46 planet HD#b 46 ejecta blanket 46 radioactive nuclei 46 shadowed craters 46 dynamical 46 elliptical galaxy NGC 46 called gravitational microlensing 46 Amateur astronomers 46 icy moon Enceladus 46 Hanny Voorwerp 46 particles WIMPs 45 magnetospheres 45 radio occultation 45 Magnetic Imager HMI 45 Gondolo 45 Geminid 45 moon Mab 45 protostar 45 electron neutrinos 45 Phoebe orbits 45 carbonaceous chondrites 45 Higgs Boson 45 supercontinents 45 barred spiral galaxy 45 auroral 45 Ulysses spacecraft 45 tidally 45 Jupiter Ganymede 45 Perseid meteors 45 redshift 45 Interstellar Boundary Explorer 45 Itokawa asteroid 45 gravitation 45 spiral galaxy M# 45 geomagnetic field 45 Earth gravitational pull 45 Asteroids 45 coronal mass ejections 45 galaxy formation 45 magma ocean 45 Saturn Jupiter Uranus 45 ray Space Telescope 45 Einstein relativity theory 45 fractal patterns 45 cosmic microwave radiation 45 optical telescopes 45 Tempel Tuttle 45 N. Rathnasree 45 neutral mass spectrometer 45 cometary 45 Martian rocks 45 molten droplets 45 moonquakes 45 electron orbits 45 Cosmic Evolution 45 quasicrystal 45 chemical composition 45 Einstein relativity 45 S/# S1 45 supergiant star 45 Mössbauer 45 cryovolcanism 45 nebula NGC 45 X ray Observatory 45 trans Neptunian 45 carbonate minerals 45 auroras 45 Rosette Nebula 45 infrared spectrometers 45 baryonic 45 comet tail 45 planetary nebula 45 Type Ia 45 B meson 45 brown dwarf 45 Mars CRISM 45 metallicity 45 inner Oort Cloud 45 Fomalhaut 45 Vedic Astrology 45 Planetary Transits 45 Saturn moon Enceladus 45 spectroscopic observations 45 Lutetia 45 X ray binary 45 galactic alignment 45 starlight 45 muon neutrino 45 Small Magellanic Cloud 45 zodiacal 45 Convection Rotation 45 strange quarks 45 spherical halo 45 HD #b [001] 45 Asteroid Belt 45 ESO telescope 45 amateur astronomers 45 shadowy craters 45 permanently shadowed 45 Observatory STEREO 45 planet gravitational tug 45 quantum theory 45 Bill Borucki Kepler 45 infalling 45 silicate minerals 45 supernova explosions 45 Spiral galaxies 45 red supergiant