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(Click for frequent words.) 73 constellation Cassiopeia 73 reflection nebula 72 blue supergiant 70 Lagoon Nebula 70 Trifid 70 Orion nebula 70 galaxy NGC 69 ionized hydrogen 69 nebula NGC 68 Bug Nebula 68 constellation Scorpius 68 supergiant star 68 galaxy M# [002] 68 constellation Hercules 68 planetary nebula 68 starburst galaxy 68 constellation Aquarius 68 spiral galaxy NGC 67 barred spiral galaxy 67 Wolf Rayet stars 67 constellation Andromeda 67 Rosette Nebula 67 supernova remnant 66 red supergiant 66 Tarantula Nebula 66 Epsilon Aurigae 66 galactic disk 66 Trifid Nebula 65 Comet Holmes 65 circumstellar disk 65 constellation Lyra 65 cluster NGC 65 GJ #b [002] 65 elliptical galaxy 65 Virgo cluster 65 photosphere 65 interacting galaxies 65 constellation Virgo 65 ionized gas 65 eclipsing binary 65 lensing galaxy 64 galaxy M# [001] 64 Hanny Voorwerp 64 Wolf Rayet star 64 CoRoT #b 64 SNR #-#.# 64 constellation Auriga 64 glows brightly 64 nebular 64 supernova SN 64 giant elliptical galaxy 64 Orion constellation 64 Butterfly Nebula 64 constellation Centaurus 64 zodiacal light 64 ionized gases 64 unpolarized 64 nebulosity 64 X ray emission 64 asterism 64 constellation Ursa Major 64 glowing brightly 64 star Spica 64 Sagittarius B2 64 active galactic nucleus 64 Carina Nebula 64 planet HD #b 63 Crab Nebula 63 Red Rectangle 63 luminous galaxies 63 constellation Carina 63 Bok globules 63 Small Magellanic Cloud 63 silicate dust 63 Trapezium 63 Tarantula nebula 63 X ray binaries 63 spherical halo 63 X ray emitting 63 Coma Cluster 63 Omega Centauri 63 Cat Paw Nebula 63 Fornax cluster 63 Pleiades cluster 63 sundog 63 Fomalhaut b 63 RS Ophiuchi 63 SN #A 62 nebula 62 Chi Cygni 62 waxing crescent moon 62 chromosphere 62 relativistic protons 62 TrES 4 62 globular cluster M# 62 globular cluster 62 spinning neutron 62 NGC# 62 X ray pulses 62 helium nuclei 62 Virgo Cluster 62 elliptical galaxy NGC 62 spiral galaxy 62 protostar 62 IR wavelengths 62 Pleiades star 62 exoplanet orbiting 62 ionised gas 62 constellation Draco 62 X ray wavelengths 62 AB Aurigae 62 Eagle Nebula 62 globulars 62 Veil Nebula 62 Zeta Ophiuchi 62 gibbous 62 constellation Sagittarius 62 rotating neutron 61 circumstellar disks 61 Syrtis Major 61 silicon monoxide 61 constellation Aquila 61 X ray binary 61 Saturn outermost 61 Type Ia supernova 61 Milky Way halo 61 Doradus 61 KH #D 61 starburst galaxies 61 circumstellar 61 Type 1a supernovae 61 constellation Taurus 61 HD #b [002] 61 merging galaxies 61 Beta Pictoris 61 supergiant stars 61 constellation Eridanus 61 moons orbiting 61 toroid 61 planet orbits 61 Epsilon Eridani 61 Horsehead Nebula 61 Scorpii 61 volcanic moon Io 61 constellation Cygnus 61 giant elliptical galaxies 61 emit X rays 61 luminosities 61 arcminutes 61 VY Canis Majoris 60 starlike object 60 constellation Ophiuchus 60 ionizes 60 microquasar 60 velocity dispersion 60 interstellar cloud 60 Neutron stars 60 NGC #A 60 constellation Serpens 60 V# Mon 60 constellation Leo 60 galaxy cluster 60 transiting planet 60 Voorwerp 60 micron wavelengths 60 galaxy NGC# 60 circumstellar dust 60 quasar 60 constellation Bootes 60 moon Io 60 GJ#b 60 galactic clusters 60 elongated orbits 60 spiral galaxy M# 60 filamentary structure 60 constellation Fornax 60 star Beta Pictoris 60 galactic nucleus 60 superdense neutron star 60 distant quasar 60 BLG #Lb 59 protoplanetary disk 59 Supernova #A 59 interstellar clouds 59 ellipsoidal 59 exoplanets orbiting 59 galactic halo 59 CMB photons 59 AGNs 59 GRB #B 59 infrared LEDs 59 Orion Nebula 59 celestial sphere 59 SMBH 59 Mpc 59 electrons orbiting 59 backscattered 59 WASP #b 59 nebulae 59 dense clumps 59 Hot Jupiters 59 Monoceros 59 Upsilon Andromedae 59 Cygni 59 reddish glow 59 foreground galaxy 59 constellation Coma Berenices 59 cosmological distances 59 millimeter wavelength 59 metallicity 59 galactic cores 59 red supergiants 59 dwarf galaxy 59 accretion disk 59 visible wavelengths 59 planets orbits 59 gamma ray radiation 59 VHE gamma rays 59 Arches Cluster 59 intrinsic brightness 59 Type Ia 59 MG J# +# 59 J# +# [002] 59 planetary nebulae 59 Caloris 59 relativistic jets 59 sunlike star 59 moon Mimas 59 torus 59 accretion disks 59 Dumbbell Nebula 59 ionised 59 star Fomalhaut 59 Jupiter moon Io 59 constellation Cetus 59 CMB radiation 59 constellation Orion 59 BP Piscium 59 relativistic particles 59 constellation Perseus 59 Helix Nebula 59 constellation Cepheus 59 constellation Aries 58 constellation Hydra 58 Galilean moons 58 filamentary structures 58 HD#b 58 golden orb 58 Quadrantid meteor shower 58 Proxima Centauri 58 Serpens Cauda 58 blazar 58 PKS #-# 58 Cygnus X 58 Capricornus 58 Beehive Cluster 58 sodium atoms 58 HD# [002] 58 Andromeda galaxy 58 oppositely directed 58 HL Tau 58 Pinwheel Galaxy 58 Milky Way Galaxy 58 stellar nurseries 58 Helix nebula 58 baryonic 58 Delta Cephei 58 proplyds 58 Reiner Gamma 58 spiral galaxies 58 slender crescent 58 spheroidal 58 Ring Nebula 58 V# Sgr 58 Geminga 58 infrared photons 58 star Proxima Centauri 58 sunlike stars 58 spherically symmetric 58 Eridani 58 tidal tails 58 retrograde orbit 58 SN#A 58 constellation Pegasus 58 Corot 9b 58 Stephan Quintet 58 moon Ganymede 58 supernova explosion 58 active galactic nuclei 58 Carina constellation 58 HD# [005] 58 comet McNaught 58 RX J# 58 Spiral galaxies 58 emits X rays 58 predawn sky 58 infrared imager 58 BLG #L 58 orbits Saturn 58 highly collimated 58 infall 58 pinwheel shaped 58 polar vortex 58 IRAS #-# 58 Camelopardalis 58 Planetary nebulae 58 redshifted 58 Andromeda Galaxy M# 58 Lyman alpha 58 magnetar 58 X ray afterglow 58 supermassive 58 waxing gibbous moon 58 airglow 57 reddish orange color 57 glows orange 57 sun corona 57 Betelgeuse 57 protostars 57 silicate mantle 57 constellation Monoceros 57 baryonic matter 57 type Ia supernovae 57 galactic bulge 57 protoplanetary discs 57 starbursts 57 solar nebula 57 solar corona 57 blue straggler 57 Saturn moon Iapetus 57 Puppis 57 prominences 57 Orionid meteors 57 AU Mic 57 moon Enceladus 57 coronal loop 57 filamentary 57 thin crescent moon 57 coronagraph 57 cadmium sulfide 57 ionized particles 57 gravitationally lensed 57 Eta Carinae 57 UV lasers 57 comet Tempel Tuttle 57 ultradense 57 extrasolar planet HD #b 57 energetic gamma rays 57 waning gibbous moon 57 protoplanet 57 Supernovae 57 Gaussian beam 57 gamma ray emission 57 lapilli 57 highly magnetized neutron 57 interstellar dust clouds 57 energetic electrons 57 zodiac constellations 57 supernova remnants 57 Ophiuchi 57 polariton 57 HM Cancri 57 Bullet Cluster 57 Triangulum Galaxy 57 Henize #-# 57 solar prominences 57 distant galaxy 57 arcseconds 57 GQ Lupi 57 SN #C 57 gibbous moon 57 elliptical galaxies 57 electron orbiting 56 Corona Borealis 56 gravitational radiation 56 Saturnian moon 56 starlike 56 yellowish glow 56 icy moons 56 SN #gy 56 photomultiplier tubes 56 pale yellowish 56 constellation Puppis 56 cm -3 56 Upsilon Andromedae b 56 Antennae galaxies 56 moon Iapetus 56 reddish orange hue 56 waxing crescent 56 zodiacal dust 56 absorbs photons 56 protoplanetary 56 type Ia supernova 56 Cepheid variable 56 waning gibbous 56 bare light bulb 56 Noctilucent clouds 56 microlens 56 brownish haze 56 Sagittarius dwarf galaxy 56 toroidal 56 reddish hues 56 auroral oval 56 parsec 56 collimated 56 southern constellation Carina 56 microcavity 56 planetary nebulas 56 Hyades cluster 56 Aurigae 56 lenticular clouds 56 Orionis 56 smoker vents 56 yellowish hue 56 prograde 56 star Gliese 56 protoplanetary disc 56 Cepheid variables 56 HII regions 56 distant quasars 56 radiative cooling 56 supernova explosions 56 Andromeda Galaxy 56 Saturn outermost ring 56 linearly polarized 56 colliding galaxies 56 gravity warps 56 thin crescent 56 phosphor coating 56 Olympus Mons 56 supernovae explosions 56 hypernova 56 Pinwheel galaxy 56 proto galaxies 56 Coma cluster 56 Kuiper belt 56 phosphor coated 56 rotational axis 56 waning crescent Moon 56 solar radii 56 cumulus cloud 56 xenon lamp 56 J#.# [001] 56 Cepheus 56 Cosmic Microwave Background 56 runaway thermonuclear 56 Globular clusters 56 Perseus cluster 56 ultraviolet laser 56 cumulonimbus 56 Gamma ray bursts 56 #.#in LCD monitor 56 corona 56 crystalline silicates 56 Pegasi 56 XTE J# 56 Eta Carina 56 Carinae 56 Type Ia supernovae 56 anthracene 56 Dwarf galaxies 56 atomic lattice 56 gaseous planet 56 ringplane 56 constellation Gemini 56 sized planets orbiting 56 constellation Vulpecula 55 TrES 55 gravitationally bound 55 VLTI 55 chandelier dripping 55 infrared wavelengths 55 Halogen lamps 55 jovian 55 Coma Berenices 55 Gondolo 55 aluminum fins 55 GJ #b [001] 55 horseshoe shaped crater 55 yellowish orange 55 diatomic 55 submillimetre wavelengths 55 R Coronae Borealis 55 waning crescent 55 haloes 55 distant supernovae 55 supergiant 55 emits photons 55 ESO PR 55 ionized oxygen 55 Saturn Enceladus 55 ejecta 55 hydrated silica 55 Neptune Uranus 55 Kuiper belt objects 55 constellation Ara 55 microlens array 55 ultrabright 55 GRB # 55 Perseus constellation 55 arcsecond 55 lightwaves 55 waning crescent moon 55 cumulonimbus cloud 55 faint smudge 55 gravitational interaction 55 tidal bulge 55 SN #E 55 #nm laser [002] 55 Golden DRAGON 55 glow brightly 55 IRC +# 55 infrared wavelength 55 globular star 55 #lm [001] 55 Leonid shower 55 RS Oph 55 cosmic cannibal 55 brown dwarf 55 intracluster 55 supernova 55 baryon 55 comet Hale Bopp 55 observable universe 55 earthshine 55 blazars 55 blotchy rash 55 planet Gliese #c 55 silicate grains 55 Cancri 55 umbels 55 constellations Cygnus 55 Sombrero Galaxy 55 superdense 55 blackbody 55 extrasolar 55 brightest supernova 55 Triangulum 55 supermassive black hole 55 parabolic reflectors 55 auroral displays 55 moon Phobos 55 oversized showerhead 55 Perseid meteor 55 corona discharge 55 hexagonal mirrors 55 dipole moment 55 gaseous planets 55 slender crescent moon 55 Fermi telescope 55 optical wavelengths 55 rotating neutron stars 55 Beta Pictoris b 55 afterglows 54 dwarf spheroidal galaxies 54 Great Conveyor Belt 54 Orion Belt 54 moonlet 54 synchronous orbit 54 kelvins 54 beam splitter 54 dimensional electron 54 emissivity 54 obscuration 54 lowermost mantle 54 Oort Cloud 54 crescent Moon 54 PUVA psoralen plus 54 Jupiter Uranus 54 Geminid shower 54 lapis blue 54 equatorial bulge 54 infrared spectral 54 lunar crust 54 Comet NEAT 54 concentric squares 54 ultraviolet wavelengths 54 periodic oscillations 54 phototransistor 54 lunar crescent 54 magma ocean 54 water vapor condenses 54 telescope eyepiece 54 coronal mass ejections CMEs 54 VB #b 54 celestial equator 54 planets Uranus 54 emittance 54 Pavonis Mons 54 polarizing filters 54 blindingly bright 54 horizontally polarized 54 Kelvins 54 aperture telescope 54 inner asteroid belt 54 polaritons 54 Ultraviolet radiation 54 isotherms 54 spiral galaxy Messier 54 IR LEDs 54 Type Ic supernova 54 XO 3b 54 GRB# 54 hydrated electron 54 glow emanated 54 refractors 54 helium atoms 54 Peony nebula star 54 -# Fahrenheit [002] 54 #gy 54 xenon lamps 54 heliosheath 54 extragalactic 54 dimly visible 54 olivine crystals 54 sunlike 54 galactic mergers 54 Doppler shifts 54 Quadrantids 54 umbral shadow 54 proto planetary disks 54 constellation Pisces 54 submillimeter 54 LEDs illuminate 54 retroreflector 54 aurorae 54 diffuse aurora 54 spherical shapes 54 submillimetre 54 Circinus X 1 54 constellation Libra 54 magnetars 54 backlit gauges 54 dust enshrouded 54 infrared laser pulses 54 spiral nebulae 54 hadron 54 filament bulb 54 starburst 54 glowed eerily 54 Earth magnetotail 54 spadix 54 protoplanetary disks 54 asteroidal 54 gamma ray flares 54 interstellar medium 54 gamma ray observatory 54 magnetic polarity 54 magnetized plasma 54 coronal loops 54 V# Puppis 54 Mount Merapi spews 54 Gamma rays 54 Orionids 54 Planck telescope 54 planet Uranus 54 μm diameter 54 magnetotail 54 wax melts 54 Antennae Galaxies 54 galaxy clusters 54 Michelson interferometer 54 chondrules 54 X ray telescopes 54 Kepler #b 54 Saturn magnetosphere 54 fainter objects 54 Oort cloud 54 outer corona 54 Thick smoke drifted 54 orangey yellow 53 Cerro Paranal Chile 53 plagioclase 53 orbital resonance 53 G#.# +#.# 53 suns 53 tungsten halogen 53 linear Fresnel 53 kpc 53 Extrasolar planets 53 PSR B# 53 comets orbiting 53 comet Lulin 53 Fig. 4A 53 SMM J# 53 proto cluster 53 SN #D 53 Epsilon Indi 53 surface plasmon 53 1μm 53 cyanogen poisonous gas 53 absorbs ultraviolet 53 Eta Aquarid meteor shower 53 cm -2 53 icosahedral 53 strange quark 53 exciton 53 planet WASP #b 53 IRAS 4B 53 electron orbitals 53 UV wavelengths 53 van Arkel discovery 53 Cepheids 53 polarimetry 53 zodiacal constellations 53 molten magma 53 dichroic 53 Bose Einstein Condensate 53 GALEX 53 Ius Chasma 53 photoluminescence 53 Fornax 53 Jupiter Ganymede 53 convex lens 53 micrograph 53 Saturn innermost 53 Omega Nebula 53 Canis Major 53 supernova remnant Cassiopeia 53 N#W# 53 Caloris Basin 53 glowed orange 53 zodiacal constellation 53 Great Orion Nebula 53 paramagnetic 53 faint galaxies 53 RRATs 53 exo planets 53 KBOs 53 plasmon 53 unaided eye 53 starscape 53 magnetic dipole 53 planetarium dome 53 superheats 53 helium atom 53 fermion 53 keV 53 Fomalhaut 53 fovea 53 umbral 53 bolometer 53 Comet LINEAR 53 double helix nebula 53 transiting planets 53 millisecond pulsar 53 Large Magellanic Cloud 53 post perovskite 53 #lm [002] 53 vibrational modes 53 Geminid meteors 53 sun glints 53 dipolar 53 Live MOS sensor 53 grayish white 53 HiRISE image 53 ULIRGs 53 moons Phobos 53 redshifts 53 galaxies 53 photometry 53 martensite 53 coarse pyrite 53 exosphere 53 Cherenkov radiation 53 OGLE TR 53 bluish tint 53 electromagnetic flux 53 lights twinkled 53 Xenon lamps 53 nanosecond pulse 53 Type 1a supernova 53 Geminids meteor shower 53 Candor Chasma 53 candelas 53 bluish glow 53 Io Europa 53 Magellanic Stream 53 penumbral shadow 53 #K CCT 53 carbonaceous chondrites 53 Serpens 53 CoRoT 9b 53 clouds billow 53 Virginis 53 redshift 53 Corot 7b 53 ultraviolet wavelength 53 luminous flux 53 fading afterglow 53 Magnetars 53 moon Dione 53 ejecta blanket 53 comma shaped 53 Arabia Terra 53 pentaprism viewfinder 53 Gliese #e 53 #W halogen 53 electron positron pairs 53 neutron star 53 BP Psc 53 precessing 53 shorter wavelengths 53 periodic dimming 53 albedo reflectivity 53 auroral 53 stratovolcano 53 brown dwarfs 53 noctilucent clouds 53 Comet Tempel Tuttle 53 occulted 53 SNe 53 transmissivity 53 heliospheric 53 Corona Australis 53 UV photons 53 #nm #nm [002] 53 mu Arae 53 ε 53 photodetector 53 ghostly glow 53 galaxy redshift 53 HD #b [001] 53 ultraviolet imaging spectrograph 53 Cygnus Lyra region 53 iridescent blue 53 Rydberg atom 53 aluminum heatsink 53 Fluorescent lamps 53 Chromatic aberration 53 Mott insulator 53 Milky Way 53 stratocumulus clouds 53 Saturn moon Mimas 53 trans Neptunian objects 53 Comet Halley 53 spicule 52 Saturnian moons 52 greenish glow 52 superposed 52 luminosity 52 glowing orb 52 Oceanus Procellarum 52 watertight lighted pushbuttons 52 brightnesses 52 RY Sagittarii 52 planets orbiting sun 52 Josephson junction 52 reddish hue 52 Halogens 52 millimeter wavelengths 52 spirals inward 52 basaltic lava 52 pentacene molecule 52 photons particles 52 distant galaxy clusters 52 arcsec 52 kelvin 52 Kuiper Belt object 52 Uranus Jupiter 52 ionize 52 tetrahedron 52 Gaussian filter 52 neutralinos 52 fissure eruption 52 nebulas 52 Si substrate 52 bosonic 52 elliptical shapes 52 sunward 52 ultracold atomic 52 photometer 52 ionise 52 Comet Hale Bopp 52 Schematic diagram 52 smallest exoplanet 52 planet orbiting 52 planets comets 52 faint wisps 52 infalling gas 52 mirrorlike 52 Arsia Mons 52 greenish color 52 Comet Elenin 52 stellar occultation 52 Type Ia supernovas 52 ultraluminous X ray 52 HID bulbs 52 absorbs sunlight 52 Delta Aquarids 52 pinkish purple 52 #C# [009] 52 protoplanets 52 solar minima 52 opaline 52 Beta Centauri 52 emits photon 52 gamma rays emitted 52 galaxies collide 52 electron flux 52 Encke gap 52 ethereal glow 52 spathe 52 hemoglobin molecules 52 superlattices 52 RGB LED 52 particles WIMPs 52 Shiveluch volcano 52 mottled gray 52 SolarBeam 52 Crab Pulsar 52 molten rocks 52 eccentric orbits 52 planets orbiting distant 52 cirrus cloud 52 substorm 52 Ozone O3 52 downwelling 52 #/#.# CCD 52 gaseous methane 52 weakly interacting 52 -# degrees Fahrenheit [002] 52 milky quartz 52 magnetic excitations 52 electron neutrinos 52 gravitational tides 52 alkane 52 coronal holes 52 felsic tuff 52 pyroelectric 52 rubidium atoms 52 absorption spectra 52 martian landscape 52 Perseid shower 52 mega pixel sensor 52 Super Earths 52 punctate 52 latite 52 Canes Venatici 52 Earth ionosphere 52 Milky Way galaxy 52 Galactic cosmic rays 52 Pluto Eris 52 axions 52 #nm wavelength [001] 52 photocurrent 52 coppery brown 52 millisecond pulsars 52 X FEG 52 absorption coefficient 52 honeycomb structure 52 supernovae explode 52 novas 52 diffract 52 synthetic aperture 52 pn junction 52 serpent bearer 52 Infrared Thermal Imaging Spectrometer 52 polar mesospheric clouds 52 CoRoT 7b 52 circularly polarized light 52 interferometric 52 yttrium barium copper 52 Hunga Tonga 52 calderas 52 cosmic ray intensity 52 Supergiant 52 Globular Cluster 52 interstellar dust 52 Solar flares 52 Lyrids 52 supercooled liquid 52 distant galaxies 52 weak gravitational lensing 52 chlorine atom 52 OLEDs emit 52 Cold Dark Matter 52 magnetic dynamo 52 radially outward 52 Lyrid meteor shower 52 infalling 52 ENAs 52 photomultiplier tube 52 cometary debris 52 refracts light 52 inhabitable planets 52 spacecraft flyby 52 gravitationally 52 altocumulus 52 Surface Composition Spectrometer 52 fronds waving 52 sky darkens 52 ringed planet 52 globular clusters 52 Comet Machholz 52 moonlets 52 nautilus shell 52 stellar occultations 52 Figure 4a