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(Click for frequent words.) 78 redshifts 68 Mpc 68 metallicity 68 galaxy cluster 68 starburst galaxies 68 distant galaxies 67 Type Ia supernovae 67 quasars 67 supernova remnant 67 GRBs 66 AGNs 66 brown dwarfs 66 quasar 66 distant galaxy 66 visible wavelengths 65 galaxies 65 z ~ 65 supernovae 65 galaxy clusters 65 globular clusters 64 GeV 64 GRB # 64 infrared wavelengths 64 intrinsic brightness 64 eclipsing binary 64 reionization 64 distant quasars 64 distant supernovae 64 GRB #B 63 magnetar 63 luminous galaxies 63 optical wavelengths 63 XMM Newton 63 z = 63 Cepheids 63 arcseconds 63 X ray wavelengths 63 cosmic microwave background 63 elliptical galaxies 63 SNe Ia 63 type Ia supernovae 63 brightnesses 63 kpc 63 luminosities 63 J# +# [002] 63 shorter wavelengths 63 SN #A 63 X ray emission 63 HD#b 63 active galactic nuclei 63 distant quasar 62 spectra 62 supernova SN 62 cosmological distances 62 Epsilon Eridani 62 gamma ray burst 62 gamma ray emission 62 arcminutes 62 foreground galaxy 62 exoplanet 62 brown dwarf 62 faint galaxies 62 arcsec 62 globular cluster 62 transiting planets 62 J#.# [001] 62 gravitational lenses 62 WASP #b 61 keV 61 NASA Wilkinson Microwave 61 HD #b [002] 61 redshifted 61 ESO VLT 61 constellation Ursa Major 61 Type Ia supernova 61 elliptical galaxy 61 Eta Carinae 61 gravitational lensing 61 TrES 61 ULIRGs 61 gamma ray bursts 61 UDFy # 61 anisotropy 61 planetary nebulae 61 gravitational lens 61 magnetars 61 redshift z = 61 transiting planet 61 exoplanets 61 starburst galaxy 61 red supergiant 61 galaxy redshift 60 spectroscopic observations 60 solar corona 60 WMAP 60 gravitational wave 60 high redshift galaxies 60 X ray binary 60 supernova remnants 60 gravitational radiation 60 photometry 60 wavelengths 60 dwarf galaxy 60 constellation Virgo 60 AB Aurigae 60 spectroscopic 60 GALEX 60 Virgo Cluster 60 dwarf galaxies 60 Milky Way galaxy 60 AU Mic 59 Fomalhaut b 59 X ray telescopes 59 Kuiper belt 59 X ray pulses 59 SN Ia 59 extrasolar planets 59 SDSS II 59 SN #gy 59 observable universe 59 type Ia supernova 59 protostar 59 baryon 59 ejecta 59 supernova 59 electron volt 59 fainter objects 59 super Earths 59 extragalactic 59 transiting exoplanets 59 gravitationally lensed 59 interferometry 59 star Gliese 59 cm -1 59 electron neutrinos 59 radial velocity 59 Orion Nebula 59 Andromeda galaxy 59 solar nebula 59 KBOs 59 Hubble observations 59 Hubble Constant 58 submillimeter wavelengths 58 Coma Cluster 58 arcsecond 58 constellation Centaurus 58 Milky Way halo 58 dipole moment 58 Milky Way Galaxy 58 Kuiper belt objects 58 globulars 58 constellation Cassiopeia 58 VLTI 58 Small Magellanic Cloud 58 protostars 58 Type Ia 58 pulsars 58 CoRoT 58 supergiant star 58 HUDF 58 galaxy M# [002] 58 astronomers 58 HAT P 58 Crab Nebula 58 optical spectra 58 spectroscopically 58 TrES 4 58 CMB radiation 58 Corot 9b 58 SN #E 58 X ray observatories 58 filamentary structure 58 blackbody 58 Cygnus X 58 SINFONI 58 Henize #-# 57 cosmic ray 57 MeV 57 electronvolts 57 gamma ray 57 nebular 57 Type Ia supernovas 57 polarimetry 57 XTE J# 57 spatial resolution 57 optical telescopes 57 WIMPs 57 gravitational waves 57 Triangulum Galaxy 57 cosmic microwave radiation 57 Gravitational lensing 57 RS Ophiuchi 57 Hipparcos 57 G#.# +#.# 57 Andromeda Galaxy 57 Lyman alpha 57 OGLE TR 57 novae 57 velocity dispersion 57 gamma ray flares 57 Fornax cluster 57 constellation Libra 57 Virgo cluster 57 spiral galaxies 57 RXTE 57 ultraviolet wavelengths 57 microlensing events 57 planet orbits 57 Cosmic Microwave Background CMB 57 galaxy NGC 57 astronomical objects 57 HARPS spectrograph attached 57 rocky planets 57 exoplanets orbiting 57 Cepheid variables 57 X ray binaries 57 GJ#b 57 microlensing 57 lensing galaxy 57 microquasar 57 supersymmetric particles 57 pulsar 57 COROT 57 attosecond 57 Epsilon Aurigae 57 spiral galaxy 57 neutron star 57 gravitationally bound 57 solar radii 56 Betelgeuse 56 HIRES spectrometer 56 GRB# 56 neutron stars 56 constellation Sagittarius 56 neutrinos 56 millisecond pulsar 56 galaxy formation 56 gamma rays 56 millisecond pulsars 56 spiral nebulae 56 submillimeter 56 galactic disk 56 X ray afterglow 56 gaseous planet 56 Milky Way 56 CAIs 56 UVOT 56 planet orbiting 56 SDSS 56 XMM Newton observations 56 baryonic 56 constellation Aquarius 56 Lagoon Nebula 56 Red Rectangle 56 WMAP satellite 56 RS Oph 56 constellation Carina 56 amplitudes 56 axion 56 exoplanet orbiting 56 diffraction pattern 56 La Silla Chile 56 red supergiants 56 velocities 56 arcmin 56 luminosity 56 Omega Centauri 56 SNR #-#.# 56 gravitational redshift 56 extrasolar 56 photoemission 56 TNOs 56 Cancri e 56 Arches Cluster 56 cosmic rays 56 Gliese #d 56 neutralinos 56 astrometry 56 radial velocity method 56 baryon acoustic oscillations 56 blue supergiant 55 comet nucleus 55 Gamma ray bursts 55 Large Magellanic Cloud 55 Type 1a supernovae 55 submillimetre wavelengths 55 Active Galactic Nuclei 55 supermassive black hole 55 Ly alpha 55 Fermi telescope 55 neutrino 55 absorption spectra 55 protoplanetary disks 55 reflection nebula 55 extrasolar planetary systems 55 millimeter wavelengths 55 GJ #b [001] 55 galactic clusters 55 Spectrograph 55 W boson 55 extrasolar planet 55 ESO Very Large Telescope 55 supernova explosions 55 electron volts 55 quasiparticle 55 CoRoT 7b 55 Anisotropy Probe WMAP 55 spiral galaxy NGC 55 blazars 55 ESO telescope 55 optical interferometry 55 interacting galaxies 55 Galaxy Evolution 55 Beta Pictoris b 55 Kepler #b 55 terrestrial planets 55 planets orbiting 55 smallest exoplanet 55 ESO PR 55 ESA XMM Newton 55 extrasolar planets orbiting 55 planets orbiting sun 55 X ray observatory 55 RHESSI 55 infrared wavelength 55 star Proxima Centauri 55 gravitational interaction 55 distant galaxy clusters 55 baryons 55 supernova explosion 55 Pegasi 55 NICMOS 55 Cosmic Microwave Background 55 nebula 55 astronomical observations 55 blazar 55 barred spiral galaxy 55 V# Mon 55 #gy 54 AUs 54 silicate dust 54 wavelength 54 hypervelocity stars 54 celestial object 54 Beta Pictoris 54 star Fomalhaut 54 submillimetre 54 constellation Taurus 54 SN#A 54 photons 54 Earth radii 54 Gliese #e 54 CoRoT #b 54 Cancri 54 interferometers 54 galaxy 54 Comet Holmes 54 Proxima Centauri 54 PSR J# 54 Wilkinson Microwave Anisotropy Probe 54 cluster NGC 54 energetic gamma rays 54 Bullet Cluster 54 orbits 54 Cosmic Evolution 54 moonlet 54 retrograde orbits 54 RRATs 54 astrophysical 54 coronagraph 54 protoplanetary disk 54 isotopic 54 planets orbiting distant 54 orbital resonance 54 photoluminescence 54 Geminga 54 infrared astronomy 54 proto galaxies 54 infrared spectra 54 afterglows 54 VLBA 54 photon counting 54 supermassive black holes 54 galaxy M# [001] 54 merging galaxies 54 HM Cancri 54 photosphere 54 ROSAT 54 exoplanetary 54 supernovas 54 antineutrinos 54 gravitational microlensing 54 2MASS 54 Hanny Voorwerp 54 Keck telescope 54 circumstellar 54 interferometer 54 spatial dimensions 54 interstellar medium 54 Eridani 54 picoseconds 54 Keck Interferometer 54 earthshine 54 spectroscopy 54 occultations 54 MG J# +# 54 femtoseconds 54 retrograde orbit 54 GPa 54 Carinae 54 Gondolo 54 millimeter wavelength 54 Antennae Galaxies 53 auroral 53 Bok globules 53 backscattered 53 circumstellar disks 53 spherically symmetric 53 spectrographs 53 ARPES 53 weak gravitational lensing 53 Kuiper Belt object 53 brightest supernova 53 Mössbauer 53 resonance frequency 53 phonon 53 Magellanic Clouds 53 multiwavelength 53 reflectance 53 Very Large Telescope 53 planets 53 Oort cloud 53 elliptical orbits 53 GQ Lupi 53 giant elliptical galaxy 53 Gliese #g 53 electron density 53 inhomogeneous 53 magnetospheric 53 planetary nebula 53 submillimeter galaxies 53 supermassive 53 interferometric 53 exo planets 53 accretion disk 53 kelvin 53 cosmological parameters 53 planets orbits 53 interstellar dust 53 spectroscopic measurements 53 Higgs particle 53 NASA Chandra 53 gamma ray telescopes 53 elliptical galaxy NGC 53 constellation Auriga 53 wavelength infrared 53 geoneutrinos 53 WFC3 53 intracluster 53 THz 53 protoplanet 53 YORP effect 53 diffraction 53 radial velocities 53 nucleosynthesis 53 cosmologists 53 Anisotropy Probe 53 habitable planets 53 Cosmologists 53 X ray Observatory 53 X ray photons 53 SNe 53 bolometers 53 IR wavelengths 53 fainter 53 HARPS instrument 53 photometric 53 emission nebula 53 Fomalhaut 53 Quaoar 53 sterile neutrino 53 lunar crust 53 Sky Survey SDSS 53 constellation Eridanus 53 neutralino 53 axions 53 galactic cosmic rays 53 Seyfert galaxies 53 stellar occultations 53 constellation Andromeda 53 Comet Halley 53 albedo 53 sunlike stars 53 VLBI 53 magnetic reconnection 53 spacetime 53 photon 53 muon 53 photon energies 53 Cat Paw Nebula 53 Saturn rings 53 positrons 53 faraway galaxies 53 tau neutrinos 53 circumstellar dust 53 DEEP2 53 constellation Hercules 53 photons emitted 53 planemos 53 Cassini ion 53 constellation Cepheus 53 planet TrES 52 Astrophysical Journal 52 gamma ray photons 52 kaons 52 astrometric 52 substorm 52 SMM J# 52 Microlensing 52 constellation Cetus 52 cm -3 52 Epsilon Indi 52 NEAs 52 excitation energies 52 Gliese #c 52 general relativity 52 Doppler shifts 52 mrad 52 Hubble Ultra 52 antiparticle 52 cometary material 52 infrared radiation 52 Gal Yam 52 Raman scattering 52 x ray scattering 52 BLG #L 52 P/# A2 52 HD# [002] 52 isotropic 52 GRB 52 Ulysses spacecraft 52 electron diffraction 52 Orion nebula 52 spectral 52 interstellar dust clouds 52 hypervelocity star 52 Bug Nebula 52 Kashlinsky 52 Comet Hartley 52 gravitational interactions 52 ionized hydrogen 52 Pluto Charon 52 sub millimeter wavelengths 52 trans Neptunian objects 52 Crab Pulsar 52 perihelion 52 WM Keck Observatory 52 Bose Einstein condensates 52 hot Jupiters 52 supersymmetry 52 Mimas 52 Earths orbiting 52 VHE gamma rays 52 kcal mol 52 radial velocity measurements 52 Spectroscopic 52 Submillimeter Array 52 unpolarized 52 galactic mergers 52 Alfvén waves 52 GZK cutoff 52 cosmological 52 chondrules 52 Astrophysical Journal Letters 52 baryonic matter 52 Gliese 52 proto cluster 52 GJ #b [002] 52 Kuiper belt object 52 Carina constellation 52 Keck Telescope 52 circumstellar disk 52 neutrino mass 52 SUSY 52 muon neutrinos 52 sunlike star 52 Puppis 52 Wilkinson Microwave Probe 52 diffraction patterns 52 nucleon 52 orbital eccentricity 52 Corot 7b 52 Kuiper Belt Objects 52 Wolf Rayet star 52 cm -2 52 LOFAR 52 abundances 52 CoRoT satellite 52 extrasolar planetary 52 constellation Lyra 52 cd m 52 RY Sagittarii 52 tropospheric 52 cosmic ray flux 52 WFPC2 52 picosecond 52 photometer 52 Fermi LAT 52 spacecraft flyby 52 cosmological models 52 HD# [005] 52 galactic halo 52 plagioclase 52 impactors 52 cosmic gamma rays 52 R Coronae Borealis 52 celestial objects 52 SEGUE 52 cosmic ray protons 52 gamma ray observatory 52 emissivity 52 Earthlike planets 51 stellar occultation 51 polaritons 51 #mV V 51 planet HD #b 51 meV 51 Kuiper Belt 51 attoseconds 51 southern constellation Carina 51 m z 51 perigee 51 cosmic ray particles 51 Astrophysicists 51 magma ocean 51 F#W 51 Upsilon Andromedae 51 ultraluminous galaxy 51 detect gravitational waves 51 collisional 51 QCLs 51 occultation 51 Cygni 51 constellation Pegasus 51 Rayleigh scattering 51 photoelectron 51 HL Tau 51 occulted 51 Monoceros 51 chemical abundances 51 photon fluorescence 51 Angstroms 51 constellation Puppis 51 obscuration 51 Gamma ray 51 Carina Nebula 51 relativistic proton dark 51 Trifid Nebula 51 moonlets 51 Planck satellite 51 celestial sphere 51 jovian 51 gravity warps 51 chondrites 51 globular star 51 isotopic composition 51 superluminal 51 BLG #Lb 51 Å -1 51 superstrings 51 AKARI 51 Delta Cephei 51 Gravitational waves 51 antiprotons 51 elemental composition 51 linewidth 51 masers 51 GROND 51 SCP #F# 51 quark gluon plasma 51 photonic crystal 51 fluorophores 51 Raman spectroscopy 51 infrared spectral 51 parallax 51 Space Telescope 51 X ray emitting 51 Venusian atmosphere 51 Unit Telescopes 51 oxygen isotope 51 Adam Riess 51 galactic bulge 51 reflectivity 51 zodiacal light 51 planet Uranus 51 SN #C 51 relativistic protons 51 Kuiper Belt Object 51 Higgs bosons 51 heavily cratered 51 plasmon 51 planets orbiting stars 51 constellation Ophiuchus 51 constellation Aries 51 intensities 51 Hawking radiation 51 FWHM 51 VY Canis Majoris 51 star Beta Pictoris 51 micron wavelength 51 numerical aperture 51 nebulae 51 Spectrometer 51 bosonic 51 Wolf Rayet stars 51 VIRTIS 51 Dumbbell Nebula 51 laser pulses 51 NGC# 51 SMBH 51 deuterium 51 SN #D 51 shorter wavelength 51 GRB #A 51 frequency electromagnetic waves 51 planets circling 51 frequency comb 51 mantle plumes 51 dwarf spheroidal galaxies 51 Orion constellation 51 binary quasar 51 Terahertz 51 Sagittarius B2 50 missing baryons 50 potentially habitable planets 50 magnetization 50 stellar nurseries 50 heliosphere 50 airglow 50 Enceladus 50 exosolar planets 50 astrophysicists 50 x ray beam 50 Evolution Explorer 50 supergiant stars 50 luminous flux 50 Saturn magnetosphere 50 exciton 50 mesosphere 50 Ring Nebula 50 HII regions 50 nuclei 50 proplyds 50 illuminance 50 Cepheid variable 50 Wolfgang Brandner 50 SNfactory 50 faintest galaxies 50 XO 3b 50 azimuthal 50 constellation Cygnus 50 ULP cepheids 50 powder diffraction 50 #.#nm [002] 50 Tarantula Nebula 50 mu Arae 50 synchrotron emission 50 inhabitable planets 50 heliosheath 50 EVLA 50 UVES 50 Doppler measurements 50 fermion 50 Cold Dark Matter 50 Spitzer Space Telescope 50 ionospheric 50 maser emission 50 circular dichroism 50 sodium atoms 50 planet Gliese #g 50 UV wavelengths 50 Astrophysical 50 total solar irradiance 50 interferometric observations 50 orbital angular momentum 50 active galactic nucleus 50 KH #D 50 silicon monoxide 50 electrical resistivity 50 brightness 50 smallest extrasolar planet 50 pseudogap 50 magnifications 50 wavefunction 50 detect gamma rays 50 WHIM 50 absorbance 50 globular cluster M# 50 Deep Field HUDF 50 Cygnus Lyra region 50 carbonaceous chondrites 50 olivine 50 Sedna 50 sterile neutrinos 50 Doppler shift 50 gaseous planets 50 celestial equator 50 muons 50 eclipsing binaries 50 Comet Lulin 50 DZero 50 RX J# 50 gravitationally 50 dynamical evolution 50 helium atoms 50 habitable zones 50 Supernovae 50 terahertz THz 50 RR Lyrae 50 SiO 50 μm wavelength 50 Oort Cloud 50 gamma ray burst GRB 50 Dwarf galaxies 50 W bosons 50 irradiance 50 planet transits 50 BP Piscium 50 unaided eye 50 optical microscopy 50 APEX telescope 50 FRET 50 Gamma rays 50 excitations 50 astrophysical phenomena 50 Area Telescope LAT 50 Einstein theory 50 neutron radiation 50 Aurigae 50 Toutatis 50 TW Hydrae 50 starlight 50 g cm 50 magnetotail 50 waxing gibbous moon 50 Gamma ray burst 50 morphologies 50 infrared imager 50 cosmological constant 50 Magnetars 50 spatially resolved 50 solar neutrinos 50 Voorwerp 50 aphelion 50 Mauna Kea Hawaii 50 muon neutrino 50 Borexino 50 quantum particle 50 EPOXI 50 PKS #-# 50 HD #b [001] 50 cm sec 50 radiative cooling 50 icy moons 50 energetic electrons 50 UB# [003] 50 protoplanetary discs 50 proton decay 50 sun corona 49 Pleiades cluster 49 Astronomers 49 electron flux 49 conductance 49 maser 49 ionized gas 49 mK 49 star Spica 49 Comet Hale Bopp 49 boson 49 Martian meteorites 49 Eagle Nebula 49 planetary Transits 49 AAVSO 49 pointings 49 Virginis 49 planet Gliese #c 49 noctilucent clouds 49 constellation Scorpius 49 rotational axis 49 Cosmic Background Explorer 49 parsecs 49 type 1a supernovae 49 supernova remnant Cassiopeia 49 τ 49 helium nuclei 49 ionosphere 49 gamma ray emitting 49 Kepler 9c 49 Gaensler 49 MARSIS 49 η 49 troposphere 49 Zeta Ophiuchi 49 mT 49 SQUIDs 49 CoRoT 9b 49 Anisotropy 49 nT 49 distant supernovas 49 Filippenko 49 Werthimer 49 relativistic particles 49 VISTA telescope 49 LIGO 49 cosmic cannibal 49 neutral mass spectrometer 49 submillimeter wavelength 49 Optical Gravitational Lensing Experiment 49 cesium atom 49 Astronomical Units 49 OGLE 49 Explorer WISE 49 SN #ha 49 ecliptic 49 Serpens Cauda 49 Adaptive optics 49 wrinkle ridges 49 σ 49 Magnetic Imager HMI 49 astrophysical objects 49 cosmic strings 49 strange quark 49 ray Space Telescope 49 ringed planet 49 interferometric technique 49 superposed 49 Comet Elenin 49 neutrino oscillation 49 Pieter van Dokkum 49 X ray spectrometer 49 Extrasolar Planet Search 49 Tycho supernova 49 gamma rays emitted 49 Hot Jupiters 49 B mesons 49 Triangulum 49 sized planets orbiting 49 Veil Nebula 49 XMM 49 Mini TES 49 ESO La Silla 49 dust enshrouded 49 Bose Einstein Condensate 49 mainshock 49 phyllosilicates 49 TGFs 49 Submillimeter 49 Mushotzky 49 high temperature superconductivity 49 θ 49 #nm #nm [001] 49 undiscovered particle 49 cuprates 49 Elenin 49 particles WIMPs 49 coronal loop 49 Rosette Nebula 49 fermionic 49 Paranal Chile 49 SIRTF 49 CDMS experiment 49 Edwin Hubble 49 LCLS 49 paleomagnetic 49 dielectric constant 49 spectrograph 49 stimulated emission 49 circularly polarized 49 auroral activity 49 OGLE TR #b 49 spectroscopic analysis 49 THz radiation 49 angstroms 49 spectral measurements 49 YU# 49 Sunyaev effect 49 ε 49 neutrino oscillations 49 solar irradiance 49 cosmic particles 49 inelastic scattering 49 Bose Einstein condensate 49 diffraction limit 49 Multi Object Spectrograph 49 Advanced LIGO 49 telescopic observations 49 supersymmetric 49 electroweak 49 dipole dipole