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(Click for frequent words.) 67 gravitational interaction 65 orbital eccentricity 65 orbital inclination 63 Kuiper Belt Objects 63 planets orbits 63 jovian 62 galaxy M# [001] 62 moons Phobos 62 exosphere 62 baryon 62 nebular 61 extrasolar 61 meteoritic material 61 Pluto Charon 61 Earth radii 60 Fomalhaut b 60 HM Cancri 60 Churyumov Gerasimenko 60 magnetotail 60 galaxy M# [002] 60 WASP #b 60 Epsilon Eridani 60 gaseous planet 60 dipole moment 60 exoplanetary 60 retrograde orbits 60 planetary Transits 60 elongated orbits 60 eclipsing binary 60 Upsilon Andromedae 60 moon Io 60 gravitational lenses 60 Gliese #c 60 neutralinos 60 icy moons 60 retrograde orbit 59 arcminutes 59 cosmic cannibal 59 chondrites 59 arcseconds 59 GJ#b 59 gravitational pulls 59 Kuiper belt objects 59 CoRoT #b 59 Yarkovsky effect 59 elliptical orbits 59 axial tilt 59 Mpc 59 lunar crust 59 Jovian moons 59 arcsecond 59 KBOs 59 reflection nebula 59 moons orbiting 59 airglow 59 circumstellar 59 circumstellar disk 59 sextile 59 circular orbits 59 cosmological distances 58 rotational axis 58 albedo reflectivity 58 blue supergiant 58 silicon monoxide 58 planetary orbits 58 sodium atoms 58 orbits 58 galactic disk 58 comets orbiting 58 luminous galaxies 58 inhabitable planets 58 intrinsic brightness 58 Jupiter Ganymede 58 gaseous planets 58 Comet Holmes 58 protoplanet 58 photosphere 58 orbits Saturn 58 Kepler 9c 58 stellar occultation 58 distant quasar 58 Cancri e 58 filamentary structure 58 moonlet 58 #P/Churyumov-Gerasimenko 58 planets Uranus 58 Saturn Uranus 58 X ray pulses 57 celestial sphere 57 Mössbauer 57 SMBHs 57 photometry 57 cometary material 57 SMBH 57 elongated orbit 57 submillimetre wavelengths 57 synchronous orbit 57 HD#b 57 GQ Lupi 57 X ray wavelengths 57 millisecond pulsar 57 dipolar 57 planet Uranus 57 Kuiper Belt object 57 trans Neptunian objects 57 Jupiter moon Io 57 hydroxyl molecules 57 silicate dust 57 AU Mic 57 sized planets orbiting 57 Solar TErrestrial RElations Observatory 57 highly elliptical orbit 57 Corot 9b 57 gravitationally 57 geostationary orbits 57 prograde 57 astrophysical objects 57 φ 57 gravitationally bound 57 heliospheric 57 supergiant star 57 circular orbit 57 cesium atom 57 perihelion 57 RY Sagittarii 57 Beta Pictoris b 57 solar corona 57 Saturn Enceladus 57 retroreflector 57 fainter objects 57 Henize #-# 57 solar nebula 57 circumstellar disks 57 helium nuclei 57 redshifts 57 star Proxima Centauri 57 interstellar dust grains 57 waning gibbous 57 magma ocean 57 quantum superposition 57 galactic cosmic rays 57 cosmic ray flux 57 heavily cratered 57 lensing galaxy 57 Galilean moons 57 Jovian moon 57 sunlike star 57 binary quasar 56 tau neutrinos 56 detect gamma rays 56 Saturnian moons 56 constellation Ursa Major 56 electron density 56 arcsec 56 planet orbits 56 COROT 7b 56 detect gravitational waves 56 electron ion 56 ultracold atoms 56 Keck Interferometer 56 AB Aurigae 56 spectroscopically 56 Galilean satellites 56 Manned missions 56 Hubble Constant 56 mineral olivine 56 wavefunction 56 tidally locked 56 microquasar 56 sidereal 56 BLG #L 56 protoplanets 56 spectrographs 56 protoplanetary disk 56 dynamical evolution 56 outermost planet 56 Comet Halley 56 coronagraph 56 Venusian atmosphere 56 Proxima Centauri 56 longwave radiation 56 velocity dispersion 56 accretion disk 56 moon Deimos 56 sunlike stars 56 Cepheid variables 56 Convection Rotation 56 spherically symmetric 56 reentry capsule 56 GJ #b [001] 56 Triangulum 56 baryonic 56 polarimetry 56 Tempel Tuttle 56 slender crescent 56 Relations Observatory STEREO 56 topological defects 56 red supergiant 56 ionise 56 planetary surfaces 56 diffraction pattern 56 ionized gas 56 Epsilon Aurigae 56 magnetic excitations 56 tidally 56 Lagrangian 56 Earth ionosphere 56 Jupiter magnetosphere 56 axions 56 occulted 56 protoplanetary 56 gravitational interactions 56 GJ #b [002] 56 supernova SN 56 galaxy redshift 56 #.#nm [002] 55 S/# P2 55 BLG #Lb 55 wavefronts 55 Cassini flyby 55 Earthlike 55 gravitational acceleration 55 quasiparticle 55 oblate spheroid 55 eccentric orbits 55 ecliptic plane 55 coronal loop 55 superstrings 55 neutrino mass 55 Makemake 55 SN #A 55 nucleon 55 Tau Ceti 55 BepiColombo 55 Syrtis Major 55 cm -3 55 basaltic rocks 55 CMB photons 55 SIM PlanetQuest 55 Hyakutake 55 Saturn outermost 55 submillimeter wavelengths 55 Alycia Weinberger 55 Muons 55 fermion 55 planet Gliese #g 55 SNe Ia 55 APXS 55 neutral mass spectrometer 55 bosonic 55 Mercury magnetosphere 55 luminosities 55 metallicity 55 obliquity 55 exoplanets orbiting 55 strange quark 55 antiparticle 55 star Spica 55 asteroidal 55 Phoebe orbits 55 occultations 55 galaxy cluster 55 superposed 55 GZK cutoff 55 backscattered 55 Geminga 55 orbital radius 55 CoRoT satellite 55 Keck telescopes 55 moon Mimas 55 Methone 55 Mars Phobos 55 microlensing events 55 redshift z = 55 galactic clusters 55 Fornax cluster 55 moon Phobos 55 Ultraviolet Imaging Spectrograph UVIS 55 orbital velocity 55 lunar highlands 55 gravitational radiation 55 Corot 7b 55 orbited Jupiter 55 Mott insulator 55 Comet Churyumov Gerasimenko 55 PSR J# 55 Uranus 55 Saturn Cassini 55 circular polarization 55 electron flux 55 HD #b [002] 55 gravitational tugs 55 Coma Cluster 55 HiRISE image 55 Comet Hartley 55 gravitational redshift 55 Bose Einstein Condensate 55 TNOs 55 comets asteroids 54 Hubble Space Telescope HST 54 Red Rectangle 54 STEREO spacecraft 54 Rosetta orbiter 54 Andromeda galaxy 54 transiting planets 54 radiative cooling 54 arcmin 54 transiting planet 54 phonon 54 oxygen isotope 54 Delta Cephei 54 Comet Elenin 54 Oort cloud 54 perigee 54 quasicrystal 54 Io Europa 54 resonance frequency 54 COROT 54 cosmic phenomena 54 Oort Cloud 54 galactic mergers 54 constellation Eridanus 54 aphelion 54 radial velocity method 54 Plutoids 54 HD #b [001] 54 magnetisation 54 plagioclase 54 RX J# 54 Wolf Rayet stars 54 CMB radiation 54 icosahedral 54 Kuiper Belt objects 54 Toutatis 54 crystallites 54 J# +# [002] 54 XTE J# 54 NGC #A 54 absorption coefficient 54 Europa Ganymede 54 Planck satellite 54 Kuiper belt object 54 absorption spectra 54 X ray binary 54 constellation Carina 54 Spectrograph 54 OGLE TR 54 weakly interacting 54 redshift 54 magnetic polarity 54 smallest exoplanet 54 Gravitational lensing 54 Cassini flybys 54 Puppis 54 Upsilon Andromedae b 54 substorm 54 CoRoT 54 Apophis asteroid 54 meteoroid 54 ellipsoid 54 particle analyzers 54 merging galaxies 54 magnetosphere 54 Gravitational waves 54 millisecond pulsars 54 subsurface ocean 54 gravitational perturbations 54 thin crescent 54 constellation Aries 54 relativistic particles 54 Kepler #b 54 IBEX spacecraft 54 helium atom 54 baryons 54 highly elliptical orbits 54 thermodynamic equilibrium 54 proto cluster 54 X ray telescopes 54 plutoids 54 outer corona 54 millimeter wavelengths 54 Casimir cavity 54 collisional 54 Astronomical Units 54 antiproton 54 galaxy NGC 54 antiparticles 54 Earthlike planet 54 Higgs bosons 54 cometary impacts 54 accretion disks 54 submillimeter wavelength 54 ESO telescope 54 GPa 54 spacetime 54 astrometry 54 spectral measurements 54 geoid 54 zodiacal dust 54 solar radii 54 kaons 54 Muchachos Observatory 54 polar craters 54 sun corona 54 ejecta 54 equatorial orbit 54 Saturn moons Titan 54 Submillimeter Array 54 extrasolar planetary systems 53 NEAs 53 Scorpii 53 emission nebula 53 Terrestrial Planet Finder 53 elliptical galaxy 53 moonlets 53 planet magnetosphere 53 diffraction patterns 53 Pluto Eris 53 fermionic atoms 53 Kuiper Belt Object 53 Small Magellanic Cloud 53 Magnetic Imager HMI 53 orbit GEO 53 superfluid 53 star Fomalhaut 53 microlens 53 Cydonia region 53 AGNs 53 dwarf galaxy 53 exo planets 53 exo planet 53 synthetic aperture 53 linearly polarized 53 polar vortex 53 observable universe 53 polaritons 53 celestial mechanics 53 distant supernovae 53 Virgo cluster 53 Virgo Cluster 53 extrasolar worlds 53 Type 1a supernovae 53 pentacene molecule 53 Encke gap 53 Saturn magnetosphere 53 GeV 53 Nasa spacecraft 53 active galactic nucleus 53 quantum particle 53 carbonaceous chondrites 53 X ray observatory 53 CoRoT 7b 53 Beta Pictoris 53 moons circling 53 optical wavelengths 53 Bose Einstein condensates 53 cosmic ray intensity 53 volcanic moon Io 53 Mercury exosphere 53 gravitational attraction 53 planets asteroids 53 ESO VLT 53 Antennae Galaxies 53 tidal bulge 53 planetary nebulas 53 Jupiter Uranus 53 Saturnian moon Titan 53 planetoid 53 tropospheric 53 photoemission 53 Quaoar 53 waxing crescent 53 constellation Virgo 53 gravitational lens 53 equatorial bulge 53 electronic excitations 53 VLTI 53 crystal lattices 53 Hipparcos 53 penumbral shadow 53 NASA Wilkinson Microwave 53 solar minima 53 planet WASP #b 53 spheroidal 53 TrES 4 53 moon Ganymede 53 celestial equator 53 anisotropy 53 Orbiter LRO 53 CAIs 53 collimated 53 planet Gliese #c 53 orbitals 53 YORP effect 53 crustal rocks 53 electron spins 53 periodicities 53 WMAP satellite 53 largest moon Charon 53 gamma ray observatory 53 Cepheids 53 GALEX 53 antineutrinos 53 magnetospheric 53 SMOS mission 53 IR spectra 53 orbital angular momentum 53 Jupiter icy moons 53 V# Mon 53 gravitationally lensed 53 Earth magnetosphere 53 visible wavelengths 53 gamma rays emitted 53 isomeric 53 coronal loops 53 gibbous 53 submillimeter 53 infrared wavelength 53 unpolarized 53 elliptical orbit 53 particles WIMPs 53 lunar craters 53 mT 53 astrometric 53 protostar 53 geo stationary orbit 53 Pleiades cluster 53 planetesimals 53 spacecraft orbiting 53 dodecahedron 53 Yinghuo 1 53 Rosette Nebula 53 HARPS spectrograph attached 53 CoRoT 9b 53 Earth magnetotail 53 geo synchronous 53 optical spectra 53 Helioseismic 53 Carina constellation 53 interacting galaxies 53 gamma ray emission 53 electromagnetic flux 53 antihelium 53 SN#A 53 constellation Aquarius 53 azimuthal 53 P/# A2 53 extraterrestrial UFOs 53 lunar soil 53 chondritic 53 exoplanet orbiting 53 Bug Nebula 53 Eridani 53 constellation Cetus 53 elemental abundances 53 lunar orbits 53 blazar 53 meteoroids 53 occultation 53 hydrogen nuclei 53 X ray binaries 53 Capricornus 53 lunar meteorites 53 heliosheath 53 Samuel Oschin Telescope 53 moons Europa 53 barred spiral galaxy 53 interferometers 52 waxing gibbous 52 exosolar planets 52 Seyfert galaxies 52 Earthlike planets 52 antiferromagnets 52 radial velocity technique 52 Helix Nebula 52 Kuiper belt 52 ah dus 52 Hanny Voorwerp 52 Zeta Ophiuchi 52 Magellanic Clouds 52 carbonate minerals 52 Venusian 52 martian atmosphere 52 Saturnian 52 zodiac constellations 52 geyser plumes 52 constellation Centaurus 52 icy comets 52 electric dipole 52 galactic halo 52 Asteroid Belt 52 type Ia supernovae 52 Adaptive optics 52 lunar perigee 52 waning crescent 52 interstellar cloud 52 comet Churyumov Gerasimenko 52 muon 52 giant elliptical galaxy 52 macroscopically 52 phyllosilicates 52 -# ° C [001] 52 HIRES spectrometer 52 UV photons 52 thermal equilibrium 52 Cosmic Microwave Background 52 eclipsing binaries 52 Unit Telescopes 52 Keplerian 52 Martian equator 52 Cygnus Lyra region 52 boson 52 interplanetary spacecraft 52 telescopic observations 52 Martian orbit 52 microwave photon 52 filamentary 52 ultraviolet photons 52 planetary embryos 52 ionised gas 52 Saturn outermost ring 52 Fermi telescope 52 W boson 52 radiative transfer 52 Crab Nebula 52 lunar equator 52 active galactic nuclei 52 Milankovitch cycles 52 blackbody 52 potassium atoms 52 HARPS instrument 52 horizontally polarized 52 heliopause 52 innermost planet 52 MG J# +# 52 orbiting Saturn 52 distant galaxy clusters 52 spectroscopic measurements 52 comet nucleus 52 constellation Taurus 52 Explorer WISE 52 spicule 52 Deep Impact eXtended Investigation 52 spacecraft flyby 52 binary asteroid 52 galactic cores 52 Uranian 52 Omega Centauri 52 electrons orbiting 52 Uranus Neptune 52 Raman spectra 52 chondrules 52 isotopic compositions 52 photon energies 52 ultracold 52 quantum oscillations 52 intracluster 52 Gliese #d 52 spatial dimensions 52 AUs 52 micrometer scale 52 PSR B# 52 Rydberg atom 52 OGLE TR #b 52 silicate minerals 52 foreground galaxy 52 VY Canis Majoris 52 Gamma ray burst 52 lanthanum strontium 52 ENAs 52 SINFONI 52 fundamental constants 52 dynamical 52 Z boson 52 interstellar dust 52 infrared laser beam 52 superfluids 52 infall 52 zodiacal light 52 interstellar particles 52 heliosphere 52 prebiotic molecules 52 atmospheric circulations 52 oxygen atom 52 Fomalhaut 52 constellation Cassiopeia 52 valence electrons 52 microlensing technique 52 interferometer 52 starburst galaxy 52 polar mesospheric clouds 52 galaxy formation 52 stellar nurseries 52 Doppler shifts 52 Maxwell equations 52 photonic crystal 52 La Silla observatory 52 constellation Cepheus 52 vibrational frequency 52 Wilkinson Microwave Probe 52 Anisotropy Probe WMAP 52 crystal lattice 52 HiRISE camera aboard 52 neutralino 52 equatorial latitudes 52 particle acceleration 52 Weakly Interacting Massive Particles 52 Gliese #e 52 helium atoms 52 BP Piscium 52 constellation Hercules 52 σ 52 Shackleton crater 52 morphologies 52 Mini Thermal Emission 52 tropical latitudes 52 θ 52 moon Mab 52 Planck telescope 52 brown dwarfs 52 photoelectron 52 emissivity 52 Saturnian moon 52 SDSS II 52 donor acceptor 52 supersymmetric particles 52 isotherms 52 Cepheus 52 Astrological lore 52 antineutrino 52 -# ° F [001] 52 electron neutrinos 52 shorter wavelengths 52 VIRTIS 52 mu Arae 52 Voyager spacecraft 52 Kepler 9b 52 keV 52 UK DMC2 52 strange quarks 52 planets orbiting 52 moons JAXA 52 Comet Tempel Tuttle 52 Nili Fossae 52 geoneutrinos 52 dI dV 52 twin STEREO spacecraft 52 interstellar dust clouds 52 plasmon 52 hydrostatic equilibrium 52 periodic dimming 52 spectroscopic observations 51 nucleosynthesis 51 Heterodyne Instrument 51 hematite mineral 51 electron proton 51 polariton 51 spinels 51 z ~ 51 Active Galactic Nuclei 51 radial velocity 51 Arches Cluster 51 Saturn moon Iapetus 51 Higgs singlet 51 ligand receptor 51 gluon 51 dwarf spheroidal galaxies 51 Milky Way halo 51 spatially resolved 51 Pluto moon Charon 51 relativistic protons 51 Transiting 51 photomultiplier tubes 51 z = 51 Optical Spectroscopic 51 infalling 51 ellipsoids 51 tropopause 51 photons particles 51 starburst galaxies 51 cosmological parameters 51 Cassini ion 51 Galileo spacecraft 51 mineralogical composition 51 galactic nuclei 51 Doppler measurements 51 dwarf spheroidal 51 sulfate aerosols 51 SIRTF 51 colloidal crystals 51 ionized particles 51 elliptical galaxy NGC 51 gravity warps 51 Hot Jupiters 51 Wolf Rayet star 51 G#.# +#.# 51 asteroids orbiting 51 rotating neutron stars 51 precessing 51 libration 51 supercurrent 51 ray Space Telescope 51 habitable worlds 51 ion traps 51 perigee closest 51 QQ# 51 muon neutrino 51 Triangulum Galaxy 51 spectral characteristics 51 asteroid orbit 51 proplyds 51 Einstein equations 51 optical lattice 51 superfluid helium 51 galactic equator 51 Thermal Emission Spectrometer 51 rubidium vapor 51 evanescent waves 51 ultraviolet imaging spectrograph 51 spiral galaxy NGC 51 Hubble orbits 51 PSR B# +# 51 proton decay 51 coronal holes 51 aspecting 51 olivine crystals 51 Keck telescope 51 HRTEM 51 emit X rays 51 magnetic dipole 51 Large Magellanic Cloud 51 geomagnetic field 51 1μm 51 noctilucent 51 redshifted 51 Saturnian system 51 spectroscopic analysis 51 planet HD #b 51 Bok globules 51 astrophysical phenomena 51 Moon Mineralogy Mapper M3 51 earths surface 51 isotopic composition 51 Earth gravitational pull 51 interferometry 51 magnetic substorms 51 spacecraft Cassini 51 aberration correctors 51 waxing gibbous moon 51 constellations Cygnus 51 asteroids comets 51 constellation Pisces 51 brightnesses 51 deuterium 51 electron diffraction 51 star Beta Pictoris 51 Astrophysical 51 elliptical polar 51 antiparallel 51 polarimeter 51 Entangled photons 51 Alfven waves 51 stellar occultations 51 ESA XMM Newton 51 martian meteorites 51 valence electron 51 crustal thickness 51 extragalactic 51 hypervelocity star 51 SBSS satellite 51 noble gases 51 cosmological observations 51 quantum mechanically 51 waxing crescent moon 51 kelvin 51 Type Ia supernovas 51 TrES 51 habitable planets 51 protostars 51 neutrino oscillations 51 hadron 51 micrometre sized 51 extrasolar planetary 51 astro comb 51 distant quasars 51 quantum particles 51 globulars 51 Brownian particles 51 VIRTIS instrument 51 habitable zones 51 homochirality 51 meson 51 constellation Pegasus 51 Noctilucent clouds 51 spectroscope 51 lithium atoms 51 microcavities 51 tungsten isotopes 51 Planetary Transits 51 antimatter particles 51 collinear 51 planets 51 rotational velocity 51 constellation Auriga 51 volcanic aerosols 51 Phobos 51 Magnetars 51 apogee farthest point 51 chromosphere 51 ion thrusters 51 Fermions 51 specular reflection 51 NASA ICESat 51 constellation Aquila 51 macroscopic objects 51 supergiant stars 51 outer planets 51 exciton 51 Gemini constellation 51 exoplanetary systems 51 massless particles 51 HL Tau 51 electron orbitals 51 mK 51 cluster NGC 51 Ulysses spacecraft 51 extrasolar planets orbiting 51 ε 51 impactor spacecraft 51 atomic lattice 51 Titan flyby 51 distant galaxy 51 ULIRGs 51 spherical shell 51 red supergiants 51 X ray emitting 51 Coronal Mass Ejections 51 comet orbit 51 laser altimeter 51 Comet #P/Churyumov-Gerasimenko 51 star Gliese 51 HAT P 51 baryonic matter 51 ESA Herschel 51 helicity 51 superheavy elements 51 trine 51 spectral bands 51 cometary debris 51 celestial bodies 51 Evolution Explorer 51 super Earths 51 extrasolar planet 51 constellation Puppis 51 inhomogeneous 51 Mars CRISM 51 photochemical reactions 51 KH #D 51 Cancri 51 silicate mantle 51 Rayleigh scattering 51 impactors 51 Type Ic supernova 51 spiral galaxy 51 Avishay Gal Yam 51 kcal mol 51 magnon 51 Jupiter Saturn Uranus 51 Titan smoggy 51 planemos 51 Olympus Mons 51 solar irradiance 51 planet Nibiru 51 optical resonator 51 NWs 51 boron atoms 50 terrestrial planets 50 Aurigae 50 curved spacetime 50 Near Infrared Camera 50 S/# [001] 50 blue straggler 50 permanently shadowed craters 50 gravitational keyhole 50 radiometry 50 polarizing filters 50 gravitational slingshot 50 Space Interferometry Mission 50 gamma ray observatories 50 hydrogen isotopes 50 rocky planets 50 VISTA telescope 50 constellation Monoceros 50 polar orbits 50 umbral shadow 50 Hellas Basin 50 Martian moons 50 lowermost mantle 50 ESO PR