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(Click for frequent words.) 72 protoplanetary disk 70 solar nebula 69 accretion disk 69 interstellar space 69 interstellar clouds 68 planetesimals 68 nebular 67 supernova explosions 67 protostar 67 circumstellar 66 infall 65 photosphere 65 interstellar cloud 65 galactic disk 65 circumstellar disk 65 galaxies 65 X ray emission 65 supernova explosion 65 magnetosphere 64 ejecta 64 infalling 64 interstellar dust 64 neutron star 64 sodium atoms 64 heliosphere 64 galaxy clusters 64 accretion disks 64 ionized gas 63 ionized particles 63 quasar 63 galactic cosmic rays 63 solar corona 63 supermassive black hole 63 Saturn magnetosphere 63 silicon monoxide 63 chondrules 63 planetary nebula 63 planetary nebulae 63 gravitationally 63 magnetospheric 62 supernovae 62 protoplanetary disks 62 quasars 62 metallicity 62 weakly interacting 62 X ray emitting 62 supermassive black holes 62 magnetic reconnection 62 exosphere 61 Milky Way halo 61 cosmic rays 61 silicates 61 galactic halo 61 Earth magnetosphere 61 galactic bulge 61 energetic electrons 61 Planetary nebulae 61 protoplanets 61 dwarf galaxies 61 nucleosynthesis 61 blue supergiant 61 heliosheath 61 neutron stars 60 atomic nuclei 60 cosmic ray particles 60 silicate dust 60 accreting 60 merging galaxies 60 dwarf galaxy 60 circumstellar disks 60 Neutron stars 60 atoms 60 gravitational interaction 60 galaxy cluster 60 SMBH 60 gravitational attraction 60 spacetime 60 pulsar 60 elongated orbits 60 protostars 60 active galactic nuclei 60 outer layers 60 Oort Cloud 60 terrestrial planets 60 WASP #b 60 gravitational radiation 59 gamma rays 59 magnetic fields 59 starburst galaxies 59 gamma ray emission 59 relativistic particles 59 Jupiter magnetosphere 59 Gravitational waves 59 Type Ia supernova 59 ionised 59 magnetotail 59 supernovae explosions 59 extrasolar 59 Wolf Rayet star 59 nuclei 59 magnetar 59 stellar nurseries 59 particles 59 distant galaxies 59 coronal mass ejections CMEs 59 comets 59 meteoroids 59 comet nucleus 59 radiative 58 galaxy 58 gravitational 58 spherical halo 58 infalling gas 58 neutralinos 58 magnetopause 58 superfluid 58 proto planetary disk 58 collisional 58 ionosphere 58 quark gluon plasma 58 Kuiper belt 58 galaxy formation 58 chromosphere 58 filamentary structure 58 Oort cloud 58 Gamma rays 58 phonons 58 ionise 58 Alfven waves 57 Bok globules 57 hydrosphere 57 cometary debris 57 organic molecules 57 magma ocean 57 gravitational interactions 57 hydrogen atoms 57 gamma rays emitted 57 nebula 57 jovian 57 globular clusters 57 supermassive stars 57 planet magnetosphere 57 filamentary 57 coronal mass ejections 57 gaseous 57 comet tail 57 bosonic 57 supernovas 57 comets asteroids 57 electrons 57 Comet Tempel Tuttle 57 radioactive decay 57 Jupiter moon Io 57 Crab Nebula 57 helium atoms 57 ionize 57 Hot Jupiters 57 icy comets 57 spectroscopic analysis 57 observable universe 57 CMB photons 57 carbonate minerals 57 planets orbits 57 AGNs 57 cosmic microwave background 57 gravitationally bound 57 red supergiant 57 sunlike star 57 planets 56 elliptical galaxy 56 Magellanic Clouds 56 SN #A 56 cometary dust 56 aerosol particles 56 protoplanetary 56 runaway thermonuclear 56 Gal Yam 56 oppositely directed 56 Earth ionosphere 56 ionised gas 56 mesosphere 56 coronal mass ejection 56 silicate minerals 56 galactic magnetic 56 red supergiants 56 starburst galaxy 56 particle acceleration 56 SN#A 56 supernova remnants 56 cometary 56 helium nuclei 56 AB Aurigae 56 Neutrons 56 tholins 56 elliptical galaxies 56 Milky Way galaxy 56 solitons 56 ultracold atoms 56 R Coronae Borealis 56 VY Canis Majoris 56 GRBs 56 astrophysical 56 subatomic particles 56 intrinsic brightness 56 gaseous planet 56 comet 56 ultraviolet wavelengths 56 lunar crust 56 millisecond pulsar 56 sterile neutrino 56 Venusian atmosphere 56 RS Ophiuchi 56 interstellar 56 polar vortex 56 oxygen ions 56 supernova 56 protoplanet 56 CMEs 56 blue straggler 56 water vapor 56 eclipsing binary 56 ions 56 asteroidal 56 globular cluster 56 rocky planets 56 chlorine monoxide 55 neutrino 55 electron density 55 lensing galaxy 55 Saturn rings 55 Milky Way Galaxy 55 planetesimal 55 brown dwarfs 55 photochemical reactions 55 protoplanetary discs 55 redshifted 55 HII regions 55 emits X rays 55 CAIs 55 tidally 55 supernova remnant 55 cosmic ray 55 Kuiper Belt Objects 55 HM Cancri 55 heliospheric 55 globulars 55 gaseous envelope 55 substorm 55 exciton 55 hydrogen nuclei 55 Sagittarius B2 55 inhomogeneous 55 atomic particles 55 alpha particles 55 molten magma 55 comets orbiting 55 HL Tau 55 exoplanetary 55 thermosphere 55 ULIRGs 55 baryonic 55 Upsilon Andromedae 55 protons 55 type Ia supernova 55 neutrons 55 polaritons 55 ionized hydrogen 55 emit X rays 55 Bose Einstein condensates 55 electron pairs 55 magnetic flux 55 planet orbits 55 Iapetus 55 excitons 55 neutrinos 55 corona 55 high redshift galaxies 55 Epsilon Eridani 55 interstellar dust clouds 55 nebulae 55 X ray binaries 55 cosmological distances 55 pulsars 55 X ray wavelengths 55 Virgo Cluster 55 Wolf Rayet stars 55 Cepheids 55 gamma ray burst 55 coronal loops 55 troposphere 55 lithium atoms 54 diamagnetic 54 sunlike stars 54 Saturnian moon 54 outer planets 54 nucleation 54 Large Magellanic Cloud 54 orbitals 54 Corot 7b 54 pions 54 galactic clusters 54 particles WIMPs 54 isotope fractionation 54 ultracold 54 filaments 54 water vapor condenses 54 HD#b 54 HD #b [002] 54 Type Ia supernovae 54 baryon 54 photons emitted 54 proplyds 54 Supernovae 54 hydrogen helium 54 velocity dispersion 54 asteroid belt 54 planets moons 54 Muons 54 silicate mantle 54 spatially resolved 54 icy moons 54 spinning neutron 54 moon Mimas 54 Cosmic rays 54 hydrogen ions 54 heliopause 54 planet HD #b 54 Hawking radiation 54 plasmasphere 54 Martian atmosphere 54 planetary atmospheres 54 glows brightly 54 spiral galaxies 54 primitive meteorites 54 visible wavelengths 54 moons orbiting 54 planets comets 54 muon 54 eccentric orbits 54 gravity warps 54 Carina Nebula 54 magnetic monopoles 54 microquasar 54 photon energies 54 Supernova #A 54 electron neutrinos 54 active galactic nucleus 54 photons 54 interstellar particles 54 Bose Einstein condensate 54 ionizes 54 Bullet Cluster 54 Eta Carinae 54 redshift 54 stellar occultation 54 deuterium atoms 54 blazar 54 spheroidal 54 iron pnictides 54 emission nebula 54 sun corona 54 CMB radiation 54 spherically symmetric 54 dynamical 54 afterglows 54 VHE gamma rays 54 distant supernovae 54 Kuiper Belt 54 brown dwarf 54 reflection nebula 54 fermion 54 dense clumps 54 comet Tempel Tuttle 53 outflowing 53 helium atom 53 J# +# [002] 53 wavefunction 53 blazars 53 KBOs 53 phyllosilicates 53 antiprotons 53 highly elliptical orbits 53 elongated orbit 53 SNR #-#.# 53 rotating neutron 53 post perovskite 53 electrons orbiting 53 deuterium 53 Lyman alpha 53 relativistic jets 53 Type 1a supernovae 53 carbonaceous chondrites 53 superdense 53 lithosphere 53 Hanny Voorwerp 53 gravitational lensing 53 Cassini ion 53 tidal tails 53 Red Rectangle 53 electrons protons 53 X ray pulses 53 cosmic ray intensity 53 SN #gy 53 particles emitted 53 ionized 53 strange quark 53 hydroxyl radicals 53 potassium atoms 53 crystallites 53 olivine 53 RXTE 53 Alycia Weinberger 53 chlorine atom 53 particle 53 Beta Pictoris 53 Corot 9b 53 meridional flow 53 subsurface ocean 53 Galactic cosmic rays 53 nanobubbles 53 SMBHs 53 hot Jupiters 53 Solar System 53 supersymmetric particles 53 gravitational tugs 53 hadrons 53 planet orbiting 53 auroral 53 WIMPs 53 Enceladus 53 cometary material 53 reionization 53 planemos 53 axions 53 thermonuclear reactions 53 type Ia supernovae 53 gravitational wave 53 distant quasars 53 infrared radiation 53 galaxy M# [002] 53 mineral olivine 53 meteoritic material 53 inner moons 53 proto galaxies 53 nucleons 53 kaons 53 BP Psc 53 permanently shadowed craters 53 antimatter particles 53 optical wavelengths 53 X ray binary 53 Fomalhaut b 53 planet Gliese #c 53 atmospheric convection 53 rotational axis 53 Mandushev 53 supergiant star 53 Stephan Quintet 53 masers 53 quantum particle 53 GJ #b [002] 53 comet dust 52 oxygen atoms 52 supermassive 52 sulfate aerosol 52 AU Mic 52 galactic mergers 52 magnetars 52 moon Enceladus 52 crystal lattice 52 diffracted 52 Jovian atmosphere 52 neutrino particles 52 rubidium atoms 52 Geminga 52 volcanic moon Io 52 dimethyl sulphide 52 comet orbit 52 tau neutrinos 52 gaseous planets 52 radioactive nuclei 52 topological insulators 52 intramolecular 52 atmospheric aerosols 52 martian atmosphere 52 cosmic radiation 52 retrograde orbit 52 antiparticles 52 colliding galaxies 52 W boson 52 cosmic ray flux 52 Rydberg atoms 52 spectroscopically 52 superluminal 52 spectroscopic 52 radial velocity 52 basaltic rocks 52 gravitational tides 52 angular momentum 52 Orion Nebula 52 quasiparticle 52 intracluster 52 rotating neutron stars 52 Spitzer infrared spectrograph 52 GeV 52 GRB # 52 plasmon 52 asteroids comets 52 exoplanet orbiting 52 Small Magellanic Cloud 52 magmas 52 dust particles 52 antiferromagnets 52 electron 52 zodiacal dust 52 superfluidity 52 polar stratospheric 52 ARPES 52 distant galaxy 52 chemically reactive 52 moon Io 52 V# Mon 52 subatomic 52 magnetization 52 interstellar dust grains 52 mantle plumes 52 meteoroid impacts 52 axion 52 Saturn auroras 52 infrared wavelengths 52 filamentary structures 52 gravitational waves 52 Cosmic Microwave Background 52 XMM Newton 52 Crab Pulsar 52 protoplanetary disc 52 positrons 52 muon neutrinos 52 chondrites 52 dwarf spheroidal galaxies 52 distant supernovas 52 nucleon 52 topological defects 52 neutral mass spectrometer 52 antiproton 52 magnetic dipole 52 interfacial 52 moonlet 52 pyroxene 52 planets orbiting distant 52 muons 52 luminosities 52 gravitational tidal 52 ultraviolet radiation emitted 52 Higgs bosons 52 planetary embryos 52 SiO 52 osmium 52 Saturn moon Enceladus 52 sized planets orbiting 52 antiferromagnetic 52 Kuiper belt objects 52 ferric oxides 52 Alfvén waves 52 IRC +# 52 exosolar planets 52 galaxies collide 52 GPa 52 planet transits 52 infalling matter 52 prebiotic molecules 51 exoplanets orbiting 51 bosons 51 spherules 51 inhabitable planets 51 superfluids 51 asthenosphere 51 excitations 51 silicate grains 51 electron positron pairs 51 HD# [002] 51 Cancri e 51 rubidium vapor 51 Mercury magnetosphere 51 branes 51 highly magnetized neutron 51 orbiting planets 51 coronal holes 51 adsorbed 51 exo planets 51 silicate 51 exoplanet 51 chemical reactions 51 Rydberg atom 51 stellar seismology 51 ferromagnet 51 electron spins 51 electroweak 51 Cabeus crater 51 laser pulse 51 relativistic protons 51 outermost layers 51 antiparticle 51 GRB #B 51 dipolar 51 electrons emitted 51 vortices 51 circular orbits 51 CoRoT #b 51 luminous galaxies 51 advection 51 Milky Way 51 V# Sgr 51 Earthlike 51 lavas 51 Higgs singlet 51 solar neutrinos 51 high temperature superconductivity 51 baryons 51 GJ#b 51 noctilucent clouds 51 dopant atoms 51 Casimir cavity 51 Gliese #e 51 hypervelocity stars 51 planetary orbits 51 hydrological cycle 51 spacecraft flyby 51 Hubble observations 51 HIP #b 51 ferromagnetic 51 electronic excitations 51 meteorite impacts 51 spectra 51 dimensional electron 51 Beta Pictoris b 51 stony meteorites 51 supersolid 51 astronomical objects 51 X ray telescopes 51 maser emission 51 elliptical galaxy NGC 51 constellation Carina 51 reactants 51 elliptical orbits 51 Gamma ray bursts 51 fainter objects 51 Globular clusters 51 hydroxyl 51 Kepler #b 51 Arches Cluster 51 tropospheric 51 Earth magnetotail 51 Epsilon Aurigae 51 GRB# 51 exoplanets 51 extrasolar planetary systems 51 synchrotron emission 51 Comet 9P/Tempel 1 51 phenanthrene 51 solar flares 51 WHIM 51 isotopic ratios 51 astronomers 51 occultations 51 nanodiamonds 51 Pluto Charon 51 cuprate 51 dirty snowballs 50 tropopause 50 phonon 50 Solar flares 50 surface plasmon 50 pre biotic 50 ionized gases 50 nanocrystals 50 electrons positrons 50 pion 50 meteoroid 50 impactors 50 gamma ray bursts 50 astrophysical objects 50 spicules 50 molecules 50 bilayer 50 extragalactic 50 electrons behave 50 Bose Einstein condensation 50 presolar 50 olivines 50 proton 50 fermions 50 magma molten rock 50 coronal heating 50 oppositely charged 50 Earthlike planets 50 Rosette Nebula 50 galaxy NGC 50 gravitational pulls 50 hydrothermal fluid 50 mantle convection 50 cosmic dust 50 antiquarks 50 optical spectra 50 Mott insulator 50 Galilean moons 50 Mojzsis 50 aurorae 50 astrophysical phenomena 50 silicate rocks 50 perovskite 50 Gravitational lensing 50 Cat Paw Nebula 50 Churyumov Gerasimenko 50 Type Ia supernovas 50 spectral fingerprints 50 subatomic particle 50 meteor impacts 50 Comet Halley 50 Orion nebula 50 Cosmic Microwave Background CMB 50 Fornax cluster 50 GJ #b [001] 50 electron scattering 50 magnetic polarity 50 electron orbitals 50 planet WASP #b 50 gamma ray 50 Type 1a supernova 50 volcanic magma 50 ultraviolet photons 50 Rayleigh scattering 50 pseudogap 50 ionized atoms 50 oxygenic photosynthesis 50 constellation Virgo 50 shorter wavelengths 50 zinc sulfide 50 lattice vibrations 50 novae 50 spectral measurements 50 Trifid Nebula 50 Phoebe orbits 50 CoRoT 7b 50 boson 50 coronal hole 50 dusty disks 50 Trapezium 50 Magellanic Stream 50 magnetic dynamo 50 Coma Cluster 50 proton proton collisions 50 faint galaxies 50 isotopic composition 50 galactic cores 50 diatomic 50 correlated electron 50 heterogeneities 50 BP Piscium 50 Coronal Mass Ejections 50 thermal decomposition 50 tidal bulge 50 ion collisions 50 electron pairing 50 gluon 50 moonlets 50 extrasolar planets 50 lowermost mantle 50 ultracold atomic 50 evaporite deposits 50 perihelion 50 gravitational tug 50 quantum mechanically 50 Perseus Cluster 50 absorbs photons 50 Upsilon Andromedae b 50 Io Europa 50 anomalous cosmic rays 50 zinc ions 50 sterile neutrinos 50 TrES 4 50 P/# A2 50 quasicrystal 50 toroid 50 biogenic 50 Antennae Galaxies 50 Richard Mushotzky 50 nebulosity 50 Andromeda galaxy 50 LHC experiments 50 jarosite 50 Saturn moons 50 Type Ia 50 electrically conducting 50 De Pontieu 50 Saharan dust 50 cosmic ray protons 50 spectral fingerprint 50 Murchison meteorite 50 Wolszczan 50 Cabeus 50 magnetic excitations 50 electron orbits 50 subatomic scale 50 SN #E 50 Maunder minimum 50 stellar occultations 50 photoluminescence 50 γ 50 isotherms 50 phyllosilicate 50 explosive eruptions 50 Seyfert galaxies 50 convective 50 hydrocarbon haze 50 particle beams 50 constellation Ursa Major 50 prograde 50 magnetospheres 50 Mimas 50 Great Conveyor Belt 50 Henize #-# 50 redox reactions 50 quasiparticles 50 dynamical evolution 50 PSR J# 50 positron 50 CoRoT satellite 50 elemental abundances 50 Kuiper Belt objects 50 Saturn Enceladus 50 SNe 50 Saturnian system 50 precessing 50 supercooled liquid 50 #P/Churyumov-Gerasimenko 50 covalent bonds 50 fermionic atoms 50 torus 50 gravitational lens 50 nonequilibrium 50 ozone O3 50 sulfate aerosols 50 protons electrons 49 dipole moment 49 energetic gamma rays 49 Martian dust 49 olivine mineral 49 W bosons 49 transiting exoplanet 49 matter antimatter asymmetry 49 ENAs 49 gravitons 49 mineralogical composition 49 constellation Cassiopeia 49 microscopic bubbles 49 Bug Nebula 49 cosmic particles 49 outer corona 49 planets orbiting 49 Cosmic ray 49 diffract 49 brane 49 galactic alignment 49 Andromeda halo 49 albedo reflectivity 49 chlorine peroxide 49 Jovian moons 49 hydrogens 49 Lagoon Nebula 49 fluorescence quenching 49 plasmons 49 ultracold molecules 49 photochemistry 49 electron beams 49 carbonate globules 49 ultra violet radiation 49 magnetized plasma 49 prebiotic chemistry 49 protons collide 49 redshifts 49 helium ions 49 superposed 49 atomic nucleus 49 ionized molecules 49 dopants 49 carbonyl sulfide 49 GQ Lupi 49 galactic collisions 49 Gaensler 49 yttrium barium copper 49 anisotropy 49 CoRoT 49 colloidal crystals 49 cuprates 49 GALEX 49 airglow 49 ferroelectricity 49 alkynes 49 fermionic 49 starquakes 49 Kelvin Helmholtz 49 kerogen 49 Earth radii 49 Trojan asteroids 49 undiscovered particle 49 chlorophyll molecules 49 B mesons 49 sulfur atom 49 millisecond pulsars 49 abundances 49 mesoporous 49 gravitational microlensing 49 Virgo cluster 49 chlorophyll molecule 49 Anthony Remijan 49 infrared laser beam 49 silicon atoms 49 constellation Aries 49 constellation Perseus 49 giant elliptical galaxy 49 midlatitudes 49 hydroxyl molecules 49 strontium titanate 49 globular star 49 cell cytoplasm 49 supernova SN 49 magma 49 chemical reactivity 49 paramagnetic 49 hydrogen atom 49 proton proton 49 condensation nuclei 49 Gemini constellation 49 habitable zones 49 vibrational modes 49 quantum superposition 49 chromophore 49 Ozone O3 49 exoplanets planets 49 liquid droplets 49 phosphorescence 49 hypernova 49 impactor 49 radiative cooling 49 cuprate superconductors 49 cell membrane 49 singularities 49 upper troposphere 49 Carina constellation 49 interstellar grains 49 gravitational slingshot 49 UVES 49 spectrographs 49 prominences 49 volcanic plumes 49 coronal loop 49 XTE J# 49 chemical composition 49 micrometre sized 49 impurity atoms 49 plagioclase 49 orbits 49 exoplanetary systems 49 particle astrophysics 49 heavy fermion 49 comet McNaught 49 decays 49 mesons 49 spectroscopic measurements 49 earthlike planets 49 EPOXI 49 desorption 49 millimeter wavelengths 49 Tauri Sb 49 spiral galaxy 49 proto planetary disks 49 molten droplets 49 supergiant stars 49 PSR J# +# 49 hyperfine 49 SN #D 49 x ray beam 49 heavily cratered 49 chemisorption 49 unpaired electrons 49 polariton 49 Neptune Uranus 49 detect gamma rays 49 single celled algae 49 tiny pores 49 Ulysses spacecraft 49 Adam Riess 49 spirals inward 49 ceria 49 colliding protons 49 backscattered 49 Jupiter Saturn 49 catalytically active