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(Click for frequent words.) 54 Geza Gyuk 53 Libra constellation Vogt 52 Avishay Gal Yam 52 Hyakutake 52 Edmund Halley 51 sextillion stars 51 steering wheel tilts 51 Squyres Cornell 49 Gerhard Schwehm 49 Charon Pluto 49 Gliese #G 49 retrograde orbits 49 Halton Arp 49 Astrological lore 48 eyepiece #/#s f/#.# 48 Grammier 48 Earthly contamination 48 CoRoT #b 48 Uranus Neptune 48 largest moon Charon 48 rocky extrasolar planet 48 Wilkinson Microwave Probe 48 Kepler 9c 48 star clusters nebulae 48 Corot 7b 47 Sara Seager 47 Chris Lintott 47 HD #b [001] 47 Dean Pesnell 47 Richard Binzel 47 Dan Buhl Planetarium 47 James Fanson 47 assumed planets circling 47 Neptune Uranus 47 microquasar 47 Fred Hoyle 47 Comet Machholz 47 Dynamics Observatory 47 Gravitational lensing 47 Krimigis 47 Mars Uranus 47 Delta Cephei 47 asteroid Eros 47 Toutatis 47 Gamma ray burst 46 retrograde orbit 46 astronomer 46 Gliese #e 46 Epsilon Aurigae 46 Giovanni Cassini 46 Robotic Exploration 46 SGR J# 46 SpaceWeather.com 46 Kazantzidis 46 ESA Herschel 46 Sasselov 46 Cancri e 46 Andrea Ghez 46 bolide 46 Swift Tuttle 46 Joel Primack 46 sized planets orbiting 46 inch refracting telescope 46 Reneke 46 submillimeter wavelengths 46 Comet Hartley 2 46 Erik Asphaug 46 Konacki 46 XMM Newton X ray 45 Zolensky 45 Dominique Cassini 45 Torino Scale 45 Avi Loeb 45 hunting Kepler telescope 45 Upsilon Andromedae b 45 Carl Friedrich Gauss 45 planet Gliese #g 45 plutoids 45 planetary astronomy 45 MN4 45 Pluto Eris 45 Madhulika Guhathakurta 45 Brera Observatory 45 Ralf Gellert 45 Fermi telescope 45 star gazer 45 Spitzer Space Telescopes 45 Franck Marchis 45 Descent Imager Spectral Radiometer 45 trans Neptunian objects 45 Hipparcos 45 inhabitable planets 45 astrometric 45 Kuiper Belt Object 45 Alexander Kashlinsky 45 YU# 45 exo planets 45 millisecond pulsar 45 COROT 7b 45 Bill Borucki Kepler 45 asteroid orbit 45 Solar Dynamics Observatory 45 SIRTF 45 physicist mathematician 45 Minnesota Starwatch 45 Pluto dwarf 45 celestial observations 45 exoplanets planets outside 45 orbiting gamma ray 45 BLG #Lb 45 Buehler Planetarium 45 inner Oort Cloud 45 Ring Nebula 45 Lovis 45 gaseous planet 45 spokesman Jeff Cuson 45 authors Anne Verbiscer 45 Dennis Mammana 44 HD#b 44 inch Schmidt Cassegrain 44 Spaceweather.com 44 planetary Transits 44 meteoroid 44 astrobiology scientist 44 orbited Jupiter 44 Ringed Planet 44 Kuiper Belt object 44 Quadrantids 44 Terrestrial Planet Finder TPF 44 Elenin 44 comets orbiting 44 Quadrantid meteor shower 44 # Apophis 44 Gutoski 44 Chodas 44 Dan Werthimer 44 comets asteroids 44 Wolszczan 44 Leonid meteor showers 44 Robert Jedicke 44 intrinsic brightness 44 moons orbiting Saturn 44 discover Fomalhaut 44 Seth Shostak 44 Pieter van Dokkum 44 Saturn outermost moon 44 elongated orbits 44 landing Navias 44 perigee moon 44 Ted Molczan Canadian 44 highly elliptical orbits 44 smallest exoplanet 44 Don Yeomans 44 rare wekiu bug 44 MIT planetary scientist 44 Gliese #c 44 Thomas Harriot 44 Steins asteroid 44 Sierra Leone trafficker 44 A'Hearn 44 Jupiter Ganymede 44 Comet Halley 44 Saturn moon Mimas 44 Pleiades cluster 43 What bothers Eriacho 43 celestial sphere 43 astronomer Johannes Kepler 43 cosmological observations 43 HiRISE camera aboard 43 Grillmair 43 Comet LINEAR 43 Rolf Kudritzki 43 inch refractor telescope 43 GALEX 43 elliptical orbits 43 Huchra 43 COROT exo 3b 43 ephemeris features 43 armillary sphere 43 Astronomer 43 moons circling 43 RRATs 43 planets constellations 43 Mary Voytek 43 Christiaan Huygens 43 N. Rathnasree 43 Julia Slingo 43 journal Meteoritics 43 dimming starlight 43 Drake Deming 43 Astrophysics Laboratory 43 Muons 43 Vourlidas 43 Sommers Bausch Observatory 43 Kepler #b 43 exoplanets planets 43 eclipsing binary 43 Nasa Kepler 43 Plait 43 Spotlights swirled 43 highly elliptical orbit 43 Carnegie Institution planetary geologist 43 spiral nebulae 43 gaseous planets 43 Solar TErrestrial RElations Observatory 43 cosmological distances 43 Samuel Oschin Telescope 43 Richard Berendzen 43 Tommaso Treu 43 astronomical objects 43 thrilling stargazers 43 Bernhard Fleck 43 Near Infrared Camera 43 Diviner instrument 43 Maciej Konacki 43 submillimeter wavelength 43 Lawrence Krauss 43 Maria Zuber 43 Cassini magnetometer 43 planetary orbits 43 Peter Jenniskens 42 transiting exoplanet 42 protoplanet 42 water hypothesizes Stephane 42 star Beta Pictoris 42 faint smudges 42 PASADENA Calif. Astronomers 42 inch Samuel Oschin 42 moons orbiting 42 INTEGRAL satellite 42 Jenniskens 42 volcanic moon Io 42 renowned cosmologist 42 Io Europa 42 Mandushev 42 moon Phobos 42 auroral activity 42 Srinivasan Nageswaran whose 42 spacecraft flyby 42 Solar Terrestrial Relations 42 Owen Gingerich 42 interplanetary spacecraft 42 Comet Elenin 42 Kuiper Belt Objects 42 Solar Orbiter 42 X ray wavelengths 42 comet McNaught 42 SPIRE instrument 42 carbonaceous chondrites 42 Gerard Kuiper 42 Composite Infrared Spectrometer 42 Hubble Space 42 Comet McNaught discovered 42 Cosmic Background Explorer 42 earthshine 42 Stargazing Live 42 cosmic microwave radiation 42 telescope eyepiece 42 OGLE TR #b 42 Wide Angle Search 42 moons Phobos 42 Chamberlin Observatory 42 telescope Uranus 42 periodic dimming 42 Peter Capak 42 MG J# +# 42 Kuiper belt objects 42 Halley Comet 42 Kuiper belt object 42 Jay Melosh 42 Copernicus Galileo 42 journal Icarus 42 icy moons 42 Grote Reber 42 Amateur astronomers 42 Giovanni Schiaparelli 42 George Djorgovski 42 Lightning flickered 42 Geminga 42 mu Arae 42 Foro Italico gusty winds 42 celestial mechanics 42 orbital resonance 42 extrasolar worlds 42 orbiting Chandra 42 Herschel Space 42 Don Gurnett 42 Pleiades star 42 PSR J# 42 Capak 42 BepiColombo 42 planets orbits 42 astronomy 42 Kuiper Airborne 42 Rathnasree 42 Dwarf galaxies 42 galaxy M# [001] 42 Io Europa Ganymede 41 Einstein theories 41 extragalactic 41 Polishook 41 plutoid 41 Jupiter Uranus 41 Garan rode 41 radial velocity 41 Upsilon Andromedae 41 Hawaiian Islands Flossie 41 Proxima Centauri 41 novas 41 Zeta Ophiuchi 41 Tunguska Siberia 41 Earthlike planet 41 Comet #P 41 Aurigid 41 P/# A2 41 High Altitude Observatory 41 StarDate 41 Eric Becklin 41 Cassini ultraviolet 41 planetary nebulas 41 gravitational perturbations 41 Ultraviolet Optical Telescope 41 LORRI 41 Comet Churyumov Gerasimenko 41 orbits 41 Rosaly Lopes 41 KH #D 41 SIM PlanetQuest 41 Mario Livio 41 Cassini interdisciplinary 41 Gravity Probe B 41 planets Uranus 41 spherical halo 41 Nasa spacecraft 41 Guy Consolmagno 41 Saul Perlmutter 41 Andrew Fraknoi 41 Planetary Physics 41 spaceweather.com 41 Magnetars 41 photometry 41 Bramley Murton 41 Chandra Wickramasinghe 41 auroral emissions 41 Gondolo 41 inch refractor 41 Caltech astronomer 41 planetary alignments 41 theoretical astrophysicist 41 Fomalhaut b 41 Jedicke 41 heliocentric model 41 ultraviolet spectrograph 41 occultations 41 Ritchey Chrétien 41 Coma cluster 41 magnetic monopole 41 Fred Espenak 41 Pluto Charon 41 extrasolar 41 twin STEREO spacecraft 41 Gamma ray bursts 41 cosmic cannibal 41 Muchachos Observatory 41 RY Sagittarii 41 celestial equator 41 Sromovsky 41 cometary material 41 WASP #b 41 Svedhem 41 WISE telescope 41 Comet NEAT 41 Saturn Enceladus 41 comet nucleus 41 Halley comet 41 Sedna 41 exoplanet orbiting 41 Kip Thorne 41 Pasachoff 41 Bohdan Paczynski 41 Stephan Quintet 41 Hakan Svedhem 41 habitable planets 41 Greg Delory 41 NASA ICESat 41 galaxy M# [002] 41 Gemini constellation 41 German astronomer Johannes 41 uncontrollable gusher 41 Compton Gamma Ray 41 asteroid Steins 41 Manned missions 41 barred spiral galaxy 41 Cygnus Lyra region 41 Hubble astronomer 40 Comet Holmes 40 Mercury magnetosphere 40 innermost planet 40 Bad Astronomy 40 Verbiscer 40 coronal loops 40 submillimeter galaxies 40 Earthlike 40 filamentary structure 40 Dumbbell Nebula 40 Harlow Shapley 40 airglow 40 Lyrid meteor shower 40 RHESSI 40 superstring theory 40 Credit NASA JPL 40 SN #C 40 Machholz 40 Wolfgang Brandner 40 Dave Reneke 40 Smithsonian astronomer 40 Bottke 40 comet Tempel Tuttle 40 meteor fireball 40 infrared spectrograph 40 celestial object 40 Alicia Soderberg 40 Heliospheric Observatory SOHO 40 amateur skywatchers 40 Meteoritics 40 brightest supernova 40 Tegmark 40 Epsilon Eridani 40 Stan Woosley 40 Gregory Benford 40 planet gravitational tug 40 Neil DeGrasse Tyson 40 hydrostatic equilibrium 40 extrasolar planetary systems 40 Kailash Sahu 40 Nicolas Copernicus 40 Dimitar Sasselov 40 Cosmologists 40 Java J2EE XML 40 Pierre Simon Laplace 40 Corot 9b 40 meteor showers 40 Planck satellite 40 Helix nebula 40 occulted 40 Hipparchus 40 Stardome Observatory 40 planets circling stars 40 Nasser Peyghambarian 40 Pan STARRS PS1 telescope 40 Taurids 40 arcsecond 40 planets asteroids 40 Marchis 40 Cosmic Microwave Background 40 Image NASA JPL 40 infrared astronomy 40 Stellarium 40 Shuttle Endeavour docks 40 moon Ganymede 40 planets orbiting sun 40 mathematician Pythagoras 40 retroreflector 40 dustier stormier atmosphere 40 Binzel 40 Anisotropy Probe WMAP 40 Bryan Gaensler 40 Saturn Cassini 40 Heliospheric Observatory 40 Kuiper belt disc 40 Ralph McNutt 40 Vikhlinin 40 Lattis 40 APXS 40 Eta Aquarids 40 Xavier Bonfils 40 ULP cepheids 40 Gedmark 40 Asteroid 40 constellation Ursa Major 40 axial tilt 40 Ellery Hale 40 comets meteors 40 hypernova 40 Makemake 40 Clyde Tombaugh discovered 40 boson 40 meteor 40 planets comets 40 Tycho Brahe 40 Hubble Near Infrared 40 X ray afterglow 40 X ray observatory 40 astronomical observations 40 Gehrels 40 Hale Bopp 40 stellar occultations 40 Edmond Halley 40 Perseid shower 40 constellations planets 40 planets orbiting distant 40 constellation Carina 40 Kuchner 40 reentry capsule 40 zodiacal light 40 Europa Ganymede 40 planet transits 40 Stadermann 40 NASA astrophysicist 40 astrometry 40 Dalcanton 40 HIRES spectrometer 40 Nasa Jet Propulsion 40 planetary scientist 40 La Silla observatory 40 SCP #F# 40 Pascale Ehrenfreund 40 Phil Plait 40 unimaginably dense 40 Comet Lulin 40 Galilean moons 40 telescopic observations 40 Ulysses spacecraft 39 Omega Centauri 39 Higgs bosons 39 Jovian moons 39 Emily Lakdawalla 39 lensing galaxy 39 magnetars 39 perihelion 39 Guhathakurta 39 axion 39 journal Monthly Notices 39 elliptical shapes 39 cosmic ray flux 39 Voorwerp 39 ultraviolet wavelengths 39 gamma ray astronomy 39 comet 39 Observatoire de Paris 39 relativity theory 39 fainter objects 39 ESA Rosetta 39 exo planet 39 Lutetia 39 #gy 39 Pinwheel Galaxy 39 microlensing technique 39 astronomical 39 Neil Gehrels 39 planetary geology 39 COROT 39 stellar occultation 39 Nousek 39 lunar perigee 39 OGLE TR 39 gamma ray observatory 39 SN#A 39 planemos 39 cosmological theories 39 Compact Array 39 XMM Newton 39 Hot Jupiters 39 Spectrograph 39 Lunine 39 planet Nibiru 39 Arches Cluster 39 Coel Hellier 39 supernova SN 39 astrobiological 39 jovian 39 brightnesses 39 ESA comet chaser 39 astrophysical 39 Martin Haehnelt 39 Norm Thagard 39 planetary astronomer 39 GJ#b 39 gravitational lenses 39 Digitized Sky Survey 39 Mini TES 39 UA Steward Observatory 39 Shanghai Astronomical Observatory 39 Gaensler 39 Christophe Lovis 39 Comet Hartley 39 EPOXI spacecraft 39 Kepler 39 CU Boulder Laboratory 39 supersymmetric 39 Perseus constellation 39 optical interferometry 39 astrophysicists 39 axis perpendicular 39 cosmologists 39 outermost planet 39 asteroid 39 Rathnashree 39 fuzzy blob 39 supermoon 39 Dikpati 39 Foing 39 Brother Guy Consolmagno 39 MARSIS radar 39 SUSY 39 Giacconi 39 Lars Hernquist 39 perigee 39 polarimetry 39 SDSS II 39 Chicago Adler Planetarium 39 Perseus Cluster 39 Galactic cosmic rays 39 gory spectacles 39 Fritz Zwicky 39 exoplanetary 39 endurance remotely piloted 39 Solar Dynamics 39 Stéphane Udry 39 blazars 39 constellation Pegasus 39 Mark Clampin 39 Adam Riess 39 XMM Newton satellite 39 proto cluster 39 visit http:/saturn.jpl.nasa.gov 39 Alex Filippenko 39 Saturn rings 39 Nima Arkani Hamed 39 Venus transits 39 Douglas McCuistion 39 NASA astrobiologist 39 faraway galaxies 39 comets 39 constellation Taurus 39 NASA Far Ultraviolet 39 CfA 39 submillimetre 39 orbiting telescope 39 AGNs 39 Natalie Batalha 39 Scott Kardel 39 Von Frese 39 submillimeter 39 Jesuit astronomer 39 orbital mechanics 39 Titan flyby 39 galactic alignment 39 Galaxy Evolution 39 Percival Lowell 39 HARPS instrument 39 asteroids comets 39 astronomer Ptolemy 39 sidereal 39 planet Uranus 39 aurorae 39 Beichman 39 Uranian 39 Astronomer Royal 39 Burst Alert 39 Europa Orbiter 39 hubble 39 gravity warps 39 ESA SMART 39 Advanced LIGO 39 Oort Cloud 39 Geoff Marcy 38 Ritchey Chretien 38 geomicrobiology studying particles 38 astrophysicist 38 astronomers 38 constellation Scorpius 38 constellations Cygnus 38 Planck 38 HARPS spectrograph attached 38 Cosmologist 38 Lick Observatory 38 Orionid meteor shower 38 interstellar dust particles 38 heliocentric 38 Jack Horkheimer host 38 bedrock outcropping 38 SPICAM 38 Cassini imaging 38 Observatory astronomer 38 Transit Planetarium 38 asteroid collisions 38 Spudis 38 circular orbits 38 redshifts 38 kaons 38 Cepheids 38 stellar seismology 38 icy comets 38 Earth asteroids 38 Winglee 38 double helix nebula 38 galaxies nebulae 38 eccentric orbits 38 Astronomy buffs 38 Galilean satellites 38 Geminid Meteor Shower 38 called gravitational microlensing 38 Ray Jayawardhana 38 Haystack Observatory 38 Cassini scientist 38 Kepler Mission 38 Ted Molczan 38 zodiac constellations 38 Martin Gutoski 38 elliptical galaxy NGC 38 Comet Hale Bopp 38 Cassini flyby 38 Astrophysicist 38 comet Lulin 38 Deep Impact eXtended Investigation 38 Frank Bertoldi 38 Ed Weiler associate 38 Pluto demotion 38 GJ #b [002] 38 Flyby spacecraft 38 HiRISE image 38 sundog 38 Huygens 38 Marc Kuchner 38 Orionid 38 National Optical Astronomy 38 GA6 38 rotational axis 38 STScI 38 QQ# 38 Hamish Pritchard 38 Relations Observatory STEREO 38 extrasolar planets orbiting 38 David Southwood ESA 38 Crab Pulsar 38 dwarf planets 38 planetoid 38 Gravitational waves 38 Kepler 9b 38 luminous galaxies 38 Geoffrey Marcy 38 IBEX spacecraft 38 planets 38 CoRoT 7b 38 Planck telescope 38 Enceladus flybys 38 extrasolar planetary 38 moon 38 flyby spacecraft 38 XTE J# 38 Johannes Kepler 38 flyby 38 Roukes 38 Geminids 38 Leonid shower 38 astrophysics 38 orbital inclination 38 Stassun 38 UKIRT 38 Edwin Hubble 38 OSIRIS REx 38 transiting planet 38 Anthony Remijan 38 Kuiper Belt objects 38 Triangulum Galaxy 38 emit X rays 38 Patricia Tombaugh 38 Voyager spacecraft 38 astrophysical phenomena 38 CoRoT 9b 38 redshift 38 asteroids orbiting 38 Prof. Hawking 38 Prof Pillinger 38 detect gravitational waves 38 celestial bodies 38 ESA Planck 38 GRBs 38 Colin Pillinger 38 gravitational wave 38 Geminid meteor shower 38 galactic cosmic rays 38 Geminid 38 distant supernovae 38 optical spectra 38 supersymmetric particles 38 Fiske Planetarium 38 Le Verrier 38 microlensing events 38 Kepler discoveries 38 Grenoble Observatory 38 NASA EPOXI mission 38 Deep Impact Principal Investigator 38 Galileo Copernicus 38 Astrophysical 38 star Proxima Centauri 38 observable universe 38 FORCAST 38 exoplanets orbiting 38 Meenakshi Wadhwa 38 Einstein theory 38 albedo reflectivity 38 unaided eye 38 extrasolar planets 38 skywatching 38 X ray telescopes 38 Fraknoi 38 astronomer Clyde Tombaugh 38 protoplanetary 38 superbowl ring 38 Saturnian moon Titan 38 Chris Rapley 38 Mössbauer 38 Mercury flyby 38 KBOs 38 Hubble observations 38 NASA Cosmic Background 38 Marcus du Sautoy 38 Canis Minor 38 Perseid meteors 38 HM Cancri 38 electron orbits 38 SOHO spacecraft 38 magnetospheres 38 supergiant star 38 Planetary Transits 38 Thierry Legault 38 Astrophysical Institute 38 constellation Bootes 38 Kaltenegger 38 ecliptic 38 infrared observatory 38 Explorer WISE 38 Steward Observatory 38 starquakes 38 nicknamed Xena 38 Adrian Melott 38 oceanography meteorology 38 brightest comet 38 Eta Aquarid meteor shower 38 clumpiness 38 heliocentric universe 37 CMB radiation 37 Space Telescopes 37 MPIfR 37 Project Ozma 37 Makiko Sato 37 Christopher Chyba 37 planetary science 37 spiral galaxy Messier 37 David Spergel 37 Lagoon Nebula 37 Henize #-# 37 elliptical polar 37 sunlike star 37 Jupiter moons 37 arcseconds 37 Cepheid variables 37 Terrestrial Planet Finder 37 geostationary orbits 37 Orbiting Solar 37 Brownian particles 37 celestial objects 37 Larry Soderblom 37 interstellar dust clouds 37 Red Rectangle 37 Schwarzschild radius 37 moonquakes 37 Cassini 37 Wolfgang Ketterle 37 Strohmayer 37 Telescope BAT 37 Storrie Lombardi 37 Dava Sobel 37 Jupiter moon Io 37 Newtonian gravity 37 Spacewatch 37 spectroscopically 37 spectroscopic observations 37 GRB #B 37 orbiting observatories 37 celestial 37 X ray spectra 37 synchronous orbit 37 Hubble telescope 37 Theoretical Physicist 37 gravitational interaction 37 GQ Lupi 37 cosmic 37 exerts gravitational pull 37 Chajnantor plateau 37 Microbiologist Cynan Ellis 37 ESO VLT 37 Accurately determining 37 particle analyzers 37 spaceborne 37 Popular Astronomy 37 Stardust NExT 37 #P/Holmes 37 STEREO mission 37 Michael Studinger 37 Jack Lissauer 37 cosmological parameters 37 R. Mallar Vizhi 37 planetary embryos 37 airbursts 37 Planck spacecraft 37 perigee closest 37 gravitational lens 37 Carey Lisse 37 comet hurtling 37 Cosmic Evolution 37 Chandra Observatory 37 Comet McNaught 37 Heisenberg uncertainty principle 37 STEREO spacecraft 37 Jet Propulsion Laboratory 37 Visit SPACE.com 37 quantum gravity 37 Nibiru 37 Werthimer 37 globular cluster M# 37 Planetary Studies 37 Interior Laboratory GRAIL 37 RS Ophiuchi 37 astronomer Edmond Halley 37 ESA Cluster 37 Boethin 37 Cosmic ray 37 Convection Rotation 37 Anne Verbiscer 37 tidal bulge 37 HIP #b 37 Planetary Scientist 37 NASA Kepler telescope 37 superstrings 37 coronal heating 37 celestial phenomena 37 Hubble Space Telescope HST 37 impactor spacecraft 37 Nasa Ames 37 Jonathan Lunine 37 Leonid meteor shower 37 Komossa 37 origins spectrograph 37 solar corona 37 demoted Pluto 37 asteroids 37 stargazer 37 Herschel 37 Mars CRISM 37 Helix Nebula 37 millisecond pulsars 37 Radioastronomy 37 AKARI 37 distant quasar 37 NanoSail D 37 Submillimeter Array 37 septillion 37 Leonid Meteor Shower 37 baryon 37 George Gamow 37 Stephane Udry 37 S/# P2 37 Infrared Array Camera 37 Collider Detector 37 Corona Borealis 37 Quaoar 37 Earthlike planets 37 habitable worlds 37 cosmological 37 dynamical evolution 37 Fleischmann Planetarium 37 Laser Interferometer Space 37 Saturn magnetosphere 37 orbiting Hubble Space Telescope 37 Martian dust 37 superluminal 37 silicon monoxide 37 Crab Nebula 37 imaging spectrometer 37 AB Aurigae 37 elliptical galaxy 37 faraway galaxy 37 Astronomical 37 composite infrared spectrometer 37 Eta Carinae 37 Geminids meteor shower 37 cosmic microwave background 37 planetoids 37 type Ia supernova 37 NASA Jet Propulsion Laboratory 37 Gliese #d 37 gamma ray burst 37 Lunar Reconnaissance Orbiter LRO 37 BP Psc 37 wild frizzy hair 37 Lunar eclipse