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(Click for frequent words.) 76 Keck Observatory 76 Keck Telescope 74 Keck telescopes 73 Keck telescope 71 Subaru Telescope 70 Mauna Kea Hawaii 70 Submillimeter Array 69 Subaru telescope 69 atop Mauna Kea 68 Gemini telescopes 68 Gemini Observatory 66 meter Keck telescopes 66 NASA Infrared Telescope 65 telescope atop Mauna 64 ESO Very Large Telescope 64 Very Large Telescope 64 Lick Observatory 64 ESO VLT 64 microlensing 64 telescopes 63 telescopes atop Mauna 63 Keck Interferometer 63 CFHT 63 La Silla Observatory 62 ESA XMM Newton 62 meter Keck telescope 62 spectroscopic observations 62 optical telescopes 62 adaptive optics 62 Near Infrared Camera 62 Adaptive Optics 61 ESO Paranal Observatory 61 UKIRT 61 HIRES spectrometer 61 X ray telescopes 60 DEEP2 60 NASA Chandra 60 Keck Telescopes 60 Paranal Observatory 60 Telescope LSST 60 inch Samuel Oschin 60 National Astronomical Observatory 60 observatories 60 HARPS spectrograph attached 60 Planetology 60 ESO telescope 60 Pan STARRS PS1 telescope 59 RS Ophiuchi 59 optical telescope 59 La Silla observatory 59 Very Large Array 59 GALEX 59 Cerro Paranal 59 gravitational microlensing 59 Mount Stromlo Observatory 59 SDSS II 59 Harald Ebeling 59 astrometry 59 Samuel Oschin Telescope 59 Infrared Telescope Facility 59 Cerro Tololo 59 UCO Lick 59 distant quasar 58 Paranal 58 Telescope 58 X ray observatories 58 astronomers 58 Astrophysical Research 58 Spitzer Space Telescope 58 distant quasars 58 Arecibo Observatory 58 WMAP satellite 58 XMM Newton 58 telescope 58 spectroscopic measurements 58 Paranal Chile 58 Laser Interferometer Gravitational Wave 58 Optical Gravitational Lensing Experiment 58 BLG #Lb 58 located atop Mauna 58 HARPS instrument 58 Spectrograph 57 Faulkes Telescope 57 Fermi telescope 57 spectroscopic 57 astronomical telescope 57 Lunar Reconnaissance Orbiter Camera 57 ray Space Telescope 57 gravitational lensing 57 Active Galactic Nuclei 57 NASA Wilkinson Microwave 57 Interferometer VLTI 57 Multi Object Spectrograph 57 William Herschel Telescope 57 X ray observatory 57 Mauna Loa Observatory 57 X ray Observatory 57 infrared telescope 57 Submillimeter Array SMA 57 gamma ray observatory 57 Anisotropy Probe 57 Observatory Very 57 Gemini Telescope 57 Hawaii Mauna Kea 57 WIYN 57 HD#b 57 Mauna Kea 56 Anisotropy Probe WMAP 56 exoplanetary 56 Chilean Atacama Desert 56 Thirty Meter Telescope 56 Pan STARRS 56 radial velocity 56 NOAO 56 Hubble observations 56 radial velocity technique 56 Array ALMA 56 CoRoT satellite 56 Coma Cluster 56 Infrared Telescope UKIRT 56 Using ESO Very 56 MicroFUN 56 Solar Observatory 56 infrared telescopes 56 exoplanets orbiting 56 HiRISE camera 56 distant supernovae 56 constellation Carina 56 gravitational lenses 56 Infrared Telescope 56 Observatory NOAO 56 KamLAND 55 distant galaxies 55 Carnegie Observatories 55 Siding Spring 55 Observatory STEREO 55 HARPS spectrograph 55 MMT Observatory 55 extrasolar 55 submillimetre 55 AGNs 55 Hobby Eberly Telescope 55 supergiant star 55 Planetary Science Institute 55 Hubble Space Telescope HST 55 Area Telescope LAT 55 VLBA 55 LOFAR 55 RHESSI 55 VLTI 55 Manchester Jodrell Bank 55 Muchachos Observatory 55 interferometers 55 Thermal Emission Spectrometer 55 Infrared Array Camera 55 Cerro Pachon 55 Landsat satellite 55 millimeter wavelengths 55 Evolution Explorer 55 infrared observatory 54 Doppler measurements 54 cosmic ray observatory 54 Solar TErrestrial RElations Observatory 54 STScI 54 Wilkinson Microwave Anisotropy Probe 54 Southern Observatory ESO 54 Cerro Pachón 54 AU Mic 54 Kitt Peak 54 planetary astronomer 54 elliptical galaxy NGC 54 GRB # 54 astronomical observations 54 Triangulum Galaxy 54 Crab Pulsar 54 transiting planets 54 Omega Centauri 54 constellation Hercules 54 IfA 54 Kuiper belt objects 54 Bug Nebula 54 Cepheids 54 Field Imager 54 Virgo Cluster 54 cosmological distances 54 interferometry 54 planets orbiting distant 54 Palomar Observatory 54 VIRTIS 54 Steward Observatory 54 Las Campanas Observatory 54 X ray binary 54 Japan NAOJ 54 Upsilon Andromedae 54 XMM Newton observations 54 LROC 54 extrasolar planets orbiting 54 VISTA telescope 54 distant galaxy 54 NASA Far Ultraviolet 54 galaxy NGC 54 Interferometer 54 COROT 54 galaxy clusters 54 Super Kamiokande 54 exoplanet 54 RXTE 54 Earthlike planets 54 weak gravitational lensing 54 Observatories 54 Fomalhaut b 54 foreground galaxy 54 interferometer 54 galaxy M# [002] 54 Tommaso Treu 54 Descent Imager Spectral Radiometer 54 Geminga 54 extragalactic 54 radiotelescope 54 photometry 54 quasars 54 Rychard Bouwens 54 infrared astronomy 54 Suzaku X ray 54 Pierre Auger Observatory 54 polarimetry 53 Space Telescope 53 Hanny Voorwerp 53 extrasolar planets 53 THEMIS satellites 53 robotic telescopes 53 muon neutrinos 53 fainter objects 53 Microlensing Observations 53 ESO telescopes 53 La Silla Chile 53 Katzman Automatic 53 NASA ESA Hubble 53 exoplanet hunter 53 X ray wavelengths 53 Large Telescope 53 Telescope BAT 53 interferometric 53 ROSAT 53 HUDF 53 interferograms 53 ESO PR 53 planets orbiting 53 PASADENA Calif. Astronomers 53 Convection Rotation 53 DEIMOS 53 Planetary Transits 53 Astrophysics MOA 53 MG J# +# 53 exo planets 53 Beta Pictoris b 53 astrophysicists 53 Telescope Array 53 Mauna Loa volcano 53 Observatory LIGO 53 Infrared Thermal Imaging Spectrometer 53 Perseus Cluster 53 star Beta Pictoris 53 ESA Integral 53 infrared mapping spectrometer 53 optical interferometry 53 infrared interferometry 53 stellar occultations 53 Roque de los 53 Large Binocular Telescope LBT 53 active galactic nuclei 53 SOAR telescope 53 Adaptive optics 53 neutrino detector 53 twin Keck telescopes 53 galaxy cluster 53 AKARI 53 NAOJ 53 LIGO 53 Fermi Gamma ray 53 UVOT 53 Gravitational lensing 53 High Angular Resolution 53 APEX telescope 53 MPG ESO 53 photometer 53 astrometric 53 Cosmic Evolution 53 Cerro Armazones 53 Franck Marchis 53 gravitational wave 53 moon Io 53 intrinsic brightness 53 particle detector 53 Comet Holmes 52 Cancri 52 spiral nebulae 52 CfA 52 microlensing events 52 CHARA 52 Hinode 52 AB Aurigae 52 infrared wavelengths 52 Climate Experiment GRACE 52 Fermi LAT 52 star Gliese 52 Type Ia supernovae 52 Astronomical Observatory 52 Observatory telescope 52 transmission electron microscope 52 multiwavelength 52 faint galaxies 52 electron neutrinos 52 transiting exoplanets 52 Wide Angle Search 52 VLBI 52 NICMOS 52 WIYN telescope 52 submillimeter wavelengths 52 Epsilon Eridani 52 Mauna Kea volcano 52 WIYN Observatory 52 Velocity Planet Searcher 52 redshift 52 Red Rectangle 52 Mpc 52 numerical simulations 52 constellation Centaurus 52 Beta Pictoris 52 Upsilon Andromedae b 52 velocity Planet Searcher 52 Astrophysics 52 planetary Transits 52 HD #b [002] 52 G#.# +#.# 52 planet orbiting 52 planets orbiting sun 52 CRISM 52 optical infrared telescope 52 EVLA 52 GRB# 52 Extraterrestrial Physics 52 Jupiter moon Io 52 Atacama Large Millimeter Array 52 Compact Reconnaissance Imaging Spectrometer 52 exo planet 52 Multi Object Spectrometer 52 Herschel Space 52 XMM Newton satellite 52 ESA Planck 52 Commissariat à l' Énergie 52 WFC3 52 Infrared Pathfinder Satellite 52 optical wavelengths 52 eclipsing binary 52 neutrino telescope 52 UDFy # 52 SINFONI 52 Rolf Kudritzki 52 spiral galaxy NGC 52 detect gravitational waves 52 redshifts 52 NASA Cassini spacecraft 52 Las Cumbres Observatory 52 Hipparcos 52 Cerro Tololo Inter 52 ASTRON 52 Milky Way Galaxy 52 JILA 52 merging galaxies 52 Large Binocular Telescope 52 High Accuracy Radial 52 Astronomers 51 SSRL 51 Astrophysical 51 Galaxy Evolution 51 VIRTIS instrument 51 coronagraph 51 globulars 51 occultations 51 Nasa Kepler 51 DISR 51 XMM Newton X ray 51 Cerro Paranal Chile 51 called gravitational microlensing 51 Ionosphere Center 51 Unit Telescopes 51 Digitized Sky Survey 51 DIXI 51 astronomical observatory 51 TrES 51 optical microscopy 51 exoplanet orbiting 51 Pieter van Dokkum 51 Galileo spacecraft 51 noctilucent clouds 51 gaseous planet 51 TrES 4 51 WMAP 51 optical spectra 51 Chandra X ray 51 neutrino experiments 51 HESS telescopes 51 Cepheid variables 51 Pluto Charon 51 Type 1a supernovae 51 binary quasar 51 NASA STEREO 51 millisecond pulsar 51 spacecraft Cassini 51 astronomical objects 51 Great Observatories 51 planet HD #b 51 CMB radiation 51 galaxy redshift 51 hexagonal mirrors 51 fissure eruption 51 astrophysical phenomena 51 KBOs 51 Reflection Radiometer ASTER 51 J# +# [002] 51 neutrino detectors 51 radial velocity method 51 NASA Great Observatories 51 OGLE 51 ATST 51 sized planets orbiting 51 Gregory Asner 51 supernova remnant 51 Surveys ACS 51 Lyot 51 Swift Ultraviolet Optical 51 radio occultation 51 GJ#b 51 orbiting Chandra 51 Relations Observatory STEREO 51 Earthscope 51 Heliospheric Observatory SOHO 51 Mars Orbiter Camera 51 geochemists 51 X ray emission 51 planets orbiting stars 51 SNfactory 51 Helioseismic 51 Microlensing 51 astronomical telescopes 51 ESO La Silla 51 Cassini flyby 51 UVES 51 orbiting Hubble Space Telescope 51 cosmic phenomena 51 colliding galaxies 51 Cloud Aerosol Lidar 51 Advanced Photon Source 51 Voorwerp 51 dust enshrouded 51 luminous galaxies 51 TMT Observatory 51 GEO# 51 InSAR 51 Mössbauer 51 sodium atoms 51 Veil Nebula 51 UA Lunar 51 UA Steward Observatory 51 La Silla 51 imaging spectrometer 51 particle astrophysics 51 HUDF# 51 spectroscopically 51 astrophysical 51 Synchrotron Radiation 51 dwarf galaxy 51 Herschel telescope 51 extrasolar planet 51 Telescopes 51 Atacama Large Millimeter submillimeter 51 smallest exoplanet 51 IceCube 51 filamentary structure 51 scanning tunneling microscopy 51 Explorer WISE 51 barred spiral galaxy 51 CU Boulder LASP 50 multiband imaging photometer 50 supernovae 50 Cosmic Background Explorer 50 Delta Cephei 50 Arecibo radar 50 protoplanetary 50 Auger Observatory 50 SN #A 50 magnetar 50 interacting galaxies 50 exoplanets 50 telescopic observations 50 Stan Woosley 50 discover Fomalhaut 50 Imiloa 50 spectrographs 50 intracluster 50 HiRISE camera aboard 50 Image NASA JPL 50 particle physics experiments 50 Cancri e 50 starburst galaxies 50 type Ia supernovae 50 ACS WFC 50 V# Mon 50 Cassini ion 50 submillimeter wavelength 50 GRB #B 50 Cat Paw Nebula 50 exoplanets planets 50 Astronomy 50 particle detectors 50 Advanced Spaceborne Thermal Emission 50 blazars 50 OGLE TR #b 50 Large Synoptic Survey 50 Exoplanets 50 National Optical Astronomy 50 GRBs 50 observatory 50 orbiting observatories 50 ESA Envisat 50 Chajnantor 50 dwarf galaxies 50 Saul Perlmutter 50 Nikku Madhusudhan 50 Michael Studinger 50 NASA Fermi Gamma 50 Martian meteorites 50 gamma ray burst 50 Hinode spacecraft 50 Observatory SDO 50 SeaWiFS 50 Solar Terrestrial Relations 50 galactic clusters 50 APXS 50 Milky Way halo 50 NASA THEMIS 50 elliptical galaxies 50 galaxies 50 astronomical observatories 50 E ELT 50 Andromeda galaxy 50 extrasolar planetary systems 50 hyperspectral 50 NASA Cosmic Background 50 quasar 50 gravitationally lensed 50 Hubble Near Infrared 50 SIM PlanetQuest 50 Observatory LDEO 50 Small Magellanic Cloud 50 SN#A 50 Epsilon Aurigae 50 GJ #b [002] 50 Trifid Nebula 50 synchrotrons 50 Virgo cluster 50 Pan STARRS telescope 50 Wilkinson Microwave Probe 50 Astrobiology Institute 50 EarthScope 50 Fornax cluster 50 Laboratory SSRL 50 Stanford Synchrotron Radiation 50 spectroscope 50 LSST 50 PSR B# +# 50 SEGUE 50 Gravity Probe B 50 Resolution Imaging 50 Energy Stereoscopic 50 DZero 50 galaxy M# [001] 50 Spitzer infrared spectrograph 50 magnetars 50 Galilean satellites 50 Hawaii Telescope CFHT 50 TSN PZ camera 50 GROND 50 Epsilon Indi 50 frequency combs 50 NASA Astrobiology Institute 50 Dumbbell Nebula 50 solar corona 50 Cassini Huygens spacecraft 50 synchrotron x ray 50 undersea volcanoes 50 Lyman alpha 50 Large Magellanic Cloud 50 Planck satellite 50 Robert Jedicke 50 Astrophysical Journal 50 Gal Yam 50 Microlensing Follow Up 50 Stephan Quintet 50 spectroscopic techniques 50 electron diffraction 50 Planck spacecraft 50 neutrino beam 50 NASA Interstellar Boundary 50 SDSS III 50 Gravitational waves 50 Mars CRISM 50 interstellar cloud 50 photoluminescence 50 Cristina Chiappini 50 SN #gy 50 gamma ray spectrometer 50 Calar Alto Observatory 50 Garching Germany 50 submillimetre wavelengths 49 arcminutes 49 Spectrometer 49 star Fomalhaut 49 starburst galaxy 49 orbiting gamma ray 49 visit http:/saturn.jpl.nasa.gov 49 Ring Nebula 49 Chajnantor plateau 49 Arecibo telescope 49 gamma ray emission 49 astrophysical objects 49 ESA Envisat satellite 49 Astrophysicists 49 volcanic moon Io 49 Astrophysics Cambridge Mass. 49 Caltech Palomar Observatory 49 XTE J# 49 MIT Haystack Observatory 49 gravitational lens 49 NRAO 49 neutral mass spectrometer 49 MPIfR 49 trans Neptunian objects 49 earthshine 49 RRATs 49 ultraviolet imaging spectrograph 49 Sky Survey SDSS 49 Imiloa Astronomy Center 49 High Altitude Observatory 49 Syrtis Major 49 Planetary Fourier Spectrometer PFS 49 WASP #b 49 infrared spectrograph 49 Panoramic Survey 49 SuperWASP 49 HiRISE image 49 proto galaxies 49 observatory telescope 49 THEMIS 49 NASA Kepler 49 Kepler #b 49 MiniBooNE 49 Trojan asteroids 49 submillimeter 49 Arecibo radio 49 VIMOS 49 transiting planet 49 Carina constellation 49 P/# A2 49 Submillimeter 49 Arsia Mons 49 Great Observatories Origins 49 HiRISE 49 polarimeter 49 HM Cancri 49 Stanford Synchrotron Radiation Lightsource 49 Io Europa 49 ESA SMART 49 MINOS 49 planets circling 49 pulsars 49 celestial objects 49 radar interferometry 49 WISE infrared 49 frequency comb 49 Reflection Radiometer 49 Shri Kulkarni 49 GJ #b [001] 49 KAGUYA 49 Harlow Shapley 49 gravitational radiation 49 gravitationally bound 49 sunlike stars 49 inch refractor telescope 49 orbiting telescopes 49 EPOCh 49 TW Hydrae 49 rocky extrasolar planet 49 Spacewatch 49 star Proxima Centauri 49 periodic dimming 49 rocky planets 49 optical microscope 49 Tropical Rainfall Measuring 49 CDMS experiment 49 Advanced Camera 49 Aqua satellite 49 nicknamed Xena 49 WFPC2 49 Cassini Huygens 49 cosmic microwave background 49 Saturnian system 49 Storrie Lombardi 49 synchrotron 49 Lagoon Nebula 49 BLG #L 49 baryon 49 Astrophysical Institute 49 infrared spectra 49 EPOXI mission 49 synchrotron radiation 49 astronomy observatory 49 Radio Astronomy Observatory 49 radial velocity measurements 49 NEOWISE 49 UNAVCO 49 Explorer GALEX 49 planetary nebulas 49 Burst Alert 49 neutrino 49 spectrograph 49 Lunar Reconnaissance Orbiter LRO 49 gamma ray telescope 49 ion microprobe 49 ESO astronomer 49 amateur astronomers peering 49 seismometers 49 Observatory astronomer 49 type Ia supernova 49 Cosmic Microwave Background 49 X ray absorption spectroscopy 49 AERONET 49 Infrared Mapping Spectrometer 49 planets comets 49 Earth Asteroid 49 infrared spectrometers 49 Credit NASA JPL 49 Spitzer Space Telescopes 49 tau neutrinos 48 USArray 48 David Spergel 48 LORRI 48 muon neutrino 48 fluorescence microscope 48 photosphere 48 NanoSIMS 48 Faint Object 48 Hobby Eberly 48 afterglows 48 Maciej Konacki 48 lunar crust 48 cosmic cannibal 48 Tarantula Nebula 48 constellation Aquarius 48 beamline 48 SPring 8 48 infrared imager 48 SNR #-#.# 48 Cassini spacecraft 48 mu Arae 48 Mars Reconnaissance Orbiter 48 Sagittarius Window Eclipsing 48 Deep Field HUDF 48 Context Camera 48 X ray spectrometer 48 KIPAC 48 interferometric technique 48 Trifid 48 Tod Strohmayer 48 supernovas 48 Ultraviolet Imaging Spectrograph 48 Type Ia 48 Rosetta orbiter 48 reionization 48 Giovanni Cassini 48 F#W 48 Adam Riess 48 Electron Microscopy 48 Diviner 48 CoRoT 48 Astrophysical Journal Letters 48 VB #b 48 constellation Andromeda 48 Dauphas 48 gamma ray bursts 48 NASA JPL Caltech 48 diffraction patterns 48 Extragalactic 48 Olympus Mons 48 planetary scientist 48 Radioastronomy 48 TerraSAR X 48 Kuiper Belt object 48 SPICAM 48 HARPS 48 Long Baseline Array 48 Interior Laboratory GRAIL 48 Hubble Space Telescope 48 Lamont Doherty 48 spectral fingerprint 48 Institut d' Astrophysique de 48 Wolfgang Brandner 48 supernova SN 48 CoRoT 7b 48 SDSS telescope 48 2MASS 48 Thermal Emission Imaging 48 absorbs photons 48 elliptical galaxy 48 Luann Becker 48 Long Term Ecological 48 High Resolution Imaging 48 comet nucleus 48 active galactic nucleus 48 confocal microscope 48 asteroids orbiting 48 Filippenko 48 interferometric observations 48 ESRF 48 constellation Cetus 48 Space Physics 48 Infrared Astronomical Satellite IRAS 48 detect gamma rays 48 confocal microscopy 48 lensing galaxy 48 orbiting telescope 48 Observatory 48 globular clusters 48 Proxima Centauri 48 IODP 48 George Djorgovski 48 globular cluster 48 inhabitable planets 48 Borexino 48 Jay Melosh 48 asteroseismology 48 Lowell Observatory 48 Supernova #A 48 Pancam 48 astronomer 48 Volcano Observatory 48 Deep Impact eXtended Investigation 48 moons orbiting 48 proplyds 48 visible wavelengths 48 spectroscopy 48 Milky Way galaxy 48 linearly polarized 48 cosmic ray 48 rotating neutron stars 48 YORP effect 48 Cygnus X 48 aurorae 48 Technology Caltech 48 constellation Cassiopeia 48 spatially resolved 48 Planetary Laboratory 48 Wolszczan 48 Arabia Terra 48 HD# [002] 48 Galactic Plane 48 Earths orbiting 48 constellation Pisces 48 Astrophysics Laboratory 48 Global Surveyor 48 ENVISAT 48 Eta Carinae 48 geoneutrinos 48 giant elliptical galaxy 48 Orbiter LRO 48 Magnetic Imager HMI 48 celestial object 48 proton decay 48 polarimetric 48 gravitational waves 48 cryo EM 48 millisecond pulsars 48 Orion Nebula 48 NIRSpec 48 Konacki 48 protoplanetary disks 48 Magellan telescopes 48 planetary nebulae 48 accretion disks 48 European Synchrotron Radiation 48 ESA Herschel 48 Harvard Smithsonian Astrophysical 48 Antenna LISA 48 CALIPSO 48 zodiacal light 48 Alex Filippenko 48 NASA Mars Odyssey 48 Corot 7b 48 Comet Hartley 2 48 Anthony Remijan 48 shorter wavelengths 48 spectroscopic analysis 48 OSIRIS 48 STEREO spacecraft 48 supergiant stars 48 synchrotron X ray 48 Kepler Mission 48 Nasa spacecraft 48 jovian 48 lava tubes 48 COBE satellite 48 airglow 48 galaxy formation 48 spectrographic 47 Collider Detector 47 Carina Nebula 47 permanently shadowed craters 47 spacecraft orbiting 47 particle smasher 47 gaseous planets 47 Nikon D# Kowa 47 SECCHI 47 protostar 47 Andrea Ghez 47 Planck telescope 47 EPOXI 47 Astrophysics CfA 47 CTIO 47 superclusters 47 X ray pulses 47 Advanced LIGO 47 RIKEN 47 Comet Halley 47 neutron stars 47 Meteoritics 47 NASA MODIS 47 Heterodyne Instrument 47 Peru Geophysics 47 SDSS 47 chemical abundances 47 Physique du Globe 47 Alpha Particle 47 Ulysses spacecraft 47 transiting exoplanet 47 brightest supernova 47 AAVSO 47 ultraviolet wavelengths 47 Uninhabited Aerial Vehicle 47 Arizona Steward Observatory 47 ionospheric 47 retrograde orbits 47 detect neutrinos 47 CDMS II 47 Long Wavelength Array 47 Sagittarius B2 47 constellation Eridanus 47 Observatoire de Paris 47 Antennae Galaxies 47 NICMOS observations 47 ESA ERS 47 CSIRO Parkes radio 47 Electron Microscope 47 JDEM 47 reflection nebula 47 axions 47 moons circling 47 superlens 47 SN #C 47 Jet Propulsion Laboratory JPL 47 beamline #.#.# 47 http:/www.nasa.gov/cassini 47 NOAO AURA NSF 47 cosmic microwave radiation 47 Hubble Constant 47 Volatile Evolution 47 INTEGRAL 47 COROT 7b 47 MODIS 47 stellar occultation 47 Francis Halzen 47 Gliese #d 47 Smithsonian Astrophysical Observatory 47 Nankai Trough Zone 47 Cosmic Background Explorer COBE 47 Fermi Large 47 exosolar planets 47 radiometer 47 Nima Arkani Hamed 47 LCROSS Observation Campaign 47 orbiting Hubble telescope 47 dynamical evolution 47 Eagle Nebula 47 telescopes astronomers 47 supernova explosion 47 Hawaiian Volcano Observatory 47 Bullet Cluster 47 submillimeter galaxies 47 coronal loops