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(Click for frequent words.) 75 sunspot 69 sunspot activity 65 sunspot cycle 62 sunspot numbers 62 solar flares 61 Sunspots 60 Maunder Minimum 59 geomagnetic activity 59 photosphere 59 solar irradiance 59 X ray emission 59 coronal holes 58 solar minima 57 Maunder minimum 57 auroral 57 cosmic ray flux 56 geomagnetic 56 magnetar 56 quasars 56 elliptical galaxies 55 noctilucent clouds 55 transiting planets 55 El Niños 55 substorm 55 Lyrids 55 aurora 55 Quadrantids 55 substorms 55 planets 55 Perseids 55 luminous galaxies 54 extrasolar planets 54 galactic cosmic rays 54 supernovae 54 geomagnetic storms 54 magnetic polarity 54 magnetic reconnection 54 Orionids 54 quasar 54 KBOs 54 GRBs 54 galaxies 54 Ulysses spacecraft 54 auroral activity 54 polar vortex 54 gamma ray bursts 54 planet Uranus 54 sunlike stars 54 interglacial periods 54 Earthlike planets 54 auroral displays 53 cosmic rays 53 solar nebula 53 geomagnetic field 53 Halley comet 53 Saturn rings 53 Milankovitch cycles 53 Orion Nebula 53 cosmic microwave background 53 perihelion 53 Leonids 53 planetary orbits 53 polar caps 53 volcanism 53 X ray wavelengths 53 WASP #b 53 coronal mass ejections 53 meridional flow 53 periodicities 53 coronal heating 53 aurorae 53 icy moons 52 RHESSI 52 gravitational waves 52 CMEs 52 comets 52 Alfven waves 52 axial tilt 52 Quadrantid meteor shower 52 solar corona 52 volcanic eruptions 52 gamma ray emission 52 Upsilon Andromedae 52 meteors 52 chromosphere 52 geomagnetic disturbances 52 Solar flares 52 gamma ray burst 52 Little Ice Age 52 multi decadal 52 cosmic ray 52 Madden Julian Oscillation 52 distant galaxies 52 nebula 52 meteoroids 52 El Ninos 52 meteor showers 52 Noctilucent clouds 52 Sunspot 52 lunar perigee 52 planets orbits 52 Perseid meteors 52 Orionid 51 planetary nebulae 51 SN #gy 51 occultations 51 auroras 51 El Niño La Niña 51 Fomalhaut b 51 Venus transits 51 planets orbiting stars 51 volcanic activity 51 Comet Holmes 51 planetary nebula 51 spicules 51 coronal hole 51 moons 51 starburst galaxies 51 supernova remnant 51 planets orbiting 51 supernova explosion 51 cryovolcanism 51 gravitational lensing 51 AGNs 51 spiral galaxies 51 habitable planets 51 Gamma ray bursts 51 exoplanets 51 tropospheric 51 Geomagnetic storms 51 gaseous planet 51 Landsea 51 atmospheric methane 51 Enceladus 51 magnetosphere 51 pulsars 51 eruptive activity 51 coronal loops 51 brown dwarfs 51 Geminids 51 protoplanetary disks 51 masers 51 supernovas 51 mid latitudes 51 celestial bodies 51 Orionid meteors 51 Earth magnetosphere 51 galactic alignment 51 galaxy cluster 51 radial velocity 51 Alfvén waves 51 geomagnetic indices 51 geomagnetic storm 51 magnetic fields 50 oscillations 50 supernova explosions 50 rocky planets 50 innermost planet 50 Atlantic Multidecadal Oscillation 50 X ray afterglow 50 chondrules 50 distant quasars 50 nebulae 50 extrasolar planet 50 red supergiant 50 Cosmic Microwave Background 50 Eta Carinae 50 retrograde orbit 50 Dikpati 50 prominences 50 corona 50 coronal mass ejections CMEs 50 elliptical orbits 50 El Nino La Nina 50 Geminid shower 50 equinoxes 50 Leonid meteors 50 magnetic substorms 50 Gravitational waves 50 GRB #B 50 gamma ray flares 50 comets orbiting 50 solstices 50 mesosphere 50 solunar 50 ecliptic 50 predicted smoothed sunspot 50 magnetospheric 50 circular orbits 50 moon Enceladus 50 exo planets 50 moonlets 50 supernova 50 TGFs 50 metallicity 50 convective 50 magnetars 50 mantle plumes 50 microlensing events 50 spherically symmetric 50 XMM Newton 50 planets orbiting distant 50 Crab Nebula 50 Pacific Decadal Oscillation 50 proplyds 50 RS Ophiuchi 50 Galilean satellites 50 gravitational perturbations 50 reionization 50 lunar eclipses 50 cosmic ray intensity 50 equatorial Pacific Ocean 50 tropical cyclones 49 glacial cycles 49 ENSO cycle 49 galactic mergers 49 coronal mass ejection 49 occultation 49 landfalling hurricanes 49 SOHO spacecraft 49 interstellar clouds 49 Saturnian moon 49 exoplanet 49 dwarf galaxies 49 SSTs 49 novae 49 Supernovae 49 OGLE TR #b 49 HD #b [002] 49 elongated orbits 49 exoplanets orbiting 49 periodic oscillations 49 storminess 49 supervolcanoes 49 protoplanet 49 LASCO imagery 49 red supergiants 49 protoplanetary disk 49 El Nio 49 smoothed sunspot number 49 Paleocene Eocene Thermal Maximum 49 outer corona 49 Pacific Decadal Oscillation PDO 49 climatological 49 starburst galaxy 49 Ice Ages 49 HM Cancri 49 Saturnian 49 HF propagation 49 Sromovsky 49 tropical troposphere 49 Geminid meteors 49 Oort cloud 49 Younger Dryas 49 ionospheric 49 Great Conveyor Belt 49 magnetotail 49 intrinsic brightness 49 Rossby waves 49 planetary transits 49 La Niñas 49 distant supernovae 49 ultraviolet wavelengths 49 extrasolar 49 comet 49 Kuiper belt 49 meteorite impacts 49 explosive eruptions 49 pulsar 49 galaxy clusters 49 globular clusters 49 warmings 49 astronomers 49 zodiacal light 49 constellation Virgo 49 Hale Bopp 49 Medieval Warming 49 Holocene epoch 49 Epsilon Aurigae 49 gravitational interactions 49 ionosphere 49 glaciations 49 Milky Way galaxy 49 Svensmark 49 infrared wavelengths 49 RRATs 49 constellation Cassiopeia 48 total solar irradiance 48 Milankovitch 48 active galactic nuclei 48 Uranus 48 polar mesospheric clouds 48 ULIRGs 48 moon Io 48 ejecta 48 stellar occultations 48 YORP effect 48 astronomical objects 48 Wolf Rayet star 48 Andromeda Galaxy 48 Eta Aquarid meteor shower 48 chondrites 48 SN #A 48 thermosphere 48 Higgs bosons 48 Geminid 48 coronal loop 48 Geminid meteor shower 48 Corot 9b 48 greenhouse warming 48 El Niño Southern Oscillation 48 Hot Jupiters 48 heliosphere 48 protostars 48 elliptical galaxy 48 constellation Aquarius 48 Leonid meteor 48 gamma rays 48 optical telescopes 48 CoRoT 7b 48 ENSO 48 protostar 48 transiting planet 48 Earth axial tilt 48 solar prominences 48 brightnesses 48 planemos 48 sunspot cluster 48 BP Psc 48 Eemian 48 X ray binary 48 earthshine 48 planetary alignments 48 atmospheric circulation 48 millisecond pulsar 48 galaxy formation 48 Comet Hale Bopp 48 KH #D 48 galactic disk 48 Beta Pictoris b 48 filamentary structure 48 exoplanetary 48 Galilean moons 48 sidereal 48 midlatitudes 48 phyllosilicates 48 gravitational lens 48 jet contrails 48 anomalously warm 48 planet orbits 48 Geomagnetic 48 CoRoT satellite 48 X ray binaries 48 GJ#b 48 stellar seismology 47 constellation Centaurus 47 accretion disks 47 GRB # 47 smallest exoplanet 47 Saturn auroras 47 Haumea 47 Earthlike 47 Cancri e 47 Hipparcos 47 supersymmetric particles 47 Dansgaard Oeschger 47 Voyager spacecraft 47 Kuiper Belt Objects 47 ultraviolet radiation emitted 47 gamma ray emitting 47 celestial sphere 47 outer planets 47 Hubble observations 47 filamentary structures 47 hot Jupiters 47 radiative 47 HD#b 47 meteor shower 47 Grímsvötn 47 Kuiper belt objects 47 hydrological cycle 47 Jupiter moon Io 47 Higgs particle 47 auroral oval 47 super Earths 47 Velicogna 47 V# Mon 47 Lyrid meteor shower 47 blazar 47 superheavy elements 47 Corot 7b 47 Type Ia supernovas 47 Red Rectangle 47 Heliospheric Observatory SOHO 47 zodiacal 47 Type Ia supernova 47 particle acceleration 47 P/# A2 47 X ray observatories 47 gravitational microlensing 47 planets moons 47 La Nià ± 47 Cosmic Microwave Background CMB 47 Type Ia supernovae 47 dinosaur extinction 47 Last Glacial Maximum 47 temperature gradients 47 Oort Cloud 47 telescopic observations 47 Milky Way Galaxy 47 Carina constellation 47 AB Aurigae 47 afterglows 47 tropospheric temperature 47 jovian 47 planets astronomers 47 supernova remnants 47 gaseous planets 47 Cepheids 47 phytoplankton blooms 47 energetic electrons 47 Comet Lulin 47 dynamical processes 47 GJ #b [002] 47 interannual variability 47 axions 47 Wolf Rayet stars 47 equinox 47 Southern Oscillation 47 distant galaxy clusters 47 binary asteroid 47 distant supernovas 47 Antarctic ozone 47 sunspot cycles 47 vortices 47 galaxy M# [002] 47 ENSO El Nino 47 merging galaxies 47 Leonid shower 47 Martian dust 47 oceanic circulation 47 Saturn aurora 47 X ray telescopes 47 southern latitudes 47 CMB photons 47 ultraviolet UV radiation 47 brown dwarf 47 WIMPs 47 water vapor 47 neutron star 47 NASA Wilkinson Microwave 47 high redshift galaxies 47 millisecond pulsars 47 stellar nurseries 47 zodiacal constellations 47 anthropogenic warming 47 La Ninas 46 asteroids 46 Kuiper Belt object 46 cosmic microwave radiation 46 microlensing 46 type Ia supernovae 46 irradiance 46 sun corona 46 anticyclones 46 deglaciation 46 planet orbiting 46 Henize #-# 46 blazars 46 extrasolar planetary systems 46 atmospheric carbon dioxide 46 galactic cores 46 glaciation 46 brightest comet 46 Heliospheric Observatory 46 orbited Jupiter 46 celestial equator 46 interglacials 46 earths 46 Vourlidas 46 Leonid meteor shower 46 cosmological distances 46 Nibiru 46 ringed planet 46 constellation Perseus 46 STEREO spacecraft 46 planets circling 46 Arctic oscillation 46 brightest supernova 46 ozone depletion 46 unaided eye 46 #P/Holmes 46 Medieval Warm Period 46 troposphere 46 forcings 46 Epsilon Eridani 46 constellation Sagittarius 46 visible wavelengths 46 planet HD #b 46 eruptions 46 Saturn moon Mimas 46 rotational axis 46 Astronomers 46 planets orbiting sun 46 supermoons 46 Jupiter Uranus 46 cosmologists 46 teleconnections 46 mass extinctions 46 luminosities 46 landfalling 46 Omega Centauri 46 Betelgeuse 46 Magellanic Clouds 46 supergiant star 46 oscillation 46 Gliese #c 46 subsurface ocean 46 eclipsing binary 46 supermassive black holes 46 infrared wavelength 46 WMAP satellite 46 hydrothermal activity 46 planets Uranus 46 multidecadal 46 radiative forcing 46 meteoroid 46 Bug Nebula 46 La Niña pattern 46 moon gravitational pull 46 atmospheric CO 46 journal Icarus 46 moons orbiting 46 prograde 46 dynamical 46 Sedna 46 supermoon 46 Kepler #b 46 Saturn Uranus 46 astrophysicists 46 Gliese #g 46 convective storms 46 baryons 46 Kuiper Belt objects 46 Trapezium 46 Cassini flybys 46 hurricane landfalls 46 perturbation 46 HII regions 46 distant galaxy 46 baryonic 46 tropopause 46 extinctions 46 El Nino Southern Oscillation 46 Saturn moon Enceladus 46 Delta Aquarids 46 Kuiper Belt Object 46 electron neutrinos 46 ultraviolet radiation 46 redshifts 46 gravitational radiation 46 RXTE 46 Medieval Warm Period MWP 46 spacecraft flyby 46 COROT 46 aerosol particles 46 galaxy NGC 46 Antennae Galaxies 46 astronomical observations 46 Aurigid 46 decadal variability 46 redshift 46 globulars 45 GQ Lupi 45 spherical halo 45 Extrasolar planets 45 Upsilon Andromedae b 45 hydrogen atoms 45 Syrtis Major 45 moonlet 45 galaxy M# [001] 45 Petoukhov 45 RS Oph 45 Kuiper belt object 45 vernal equinox 45 Milky Way 45 lavas 45 interglacial period 45 supermassive black hole 45 GRB# 45 Meteor showers 45 VY Canis Majoris 45 obliquity 45 Taurids 45 plankton blooms 45 Saturn moons 45 constellation Taurus 45 moonquakes 45 glacial interglacial 45 fainter objects 45 Helix Nebula 45 N#E# 45 supergiant stars 45 interplanetary magnetic field 45 NSIDC 45 nucleosynthesis 45 dwarf galaxy 45 CoRoT 9b 45 electron density 45 Einstein cosmological constant 45 potentially habitable planets 45 Svedhem 45 Olympus Mons 45 cosmic ray particles 45 astrophysical 45 ESO PR 45 Geminga 45 decadal scale 45 ITCZ 45 Palaeocene Eocene Thermal Maximum 45 isobars 45 nevi 45 meteor impacts 45 radiative cooling 45 proto planetary disks 45 kyr 45 Perseus constellation 45 cirrus clouds 45 nebulosity 45 Ultraviolet radiation 45 neutron stars 45 Cosmologists 45 volcanic quakes 45 astronomical phenomena 45 celestial objects 45 giant gaseous planets 45 undersea volcanoes 45 planet magnetosphere 45 energetic cosmic rays 45 gravitationally bound 45 baryon 45 Saturn magnetosphere 45 moon Mimas 45 assumed planets circling 45 Eta Aquarids 45 globular cluster 45 #.#C [004] 45 fissure eruption 45 cirrus cloud 45 Wilkinson Microwave Probe 45 cirrus 45 stratospheric ozone 45 El Niño winters 45 observable universe 45 type Ia supernova 45 heliospheric 45 magnetic monopoles 45 penumbral lunar eclipse 45 equatorial Pacific 45 glacial interglacial cycles 45 relativistic particles 45 Pacific decadal oscillation 45 polar regions 45 Venusian 45 spacetime 45 De Pontieu 45 XTE J# 45 missing baryons 45 Cat Paw Nebula 45 Toutatis 45 greenhouse gas concentrations 45 globular star 45 albedo 45 elliptical orbit 45 Gliese #e 45 Gamma rays 45 dust devils 45 Friis Christensen 45 Orion nebula 45 NASA Cassini spacecraft 45 insolation 45 binary asteroids 45 GJ #b [001] 45 star Spica 45 Anisotropy Probe WMAP 45 poleward 45 tropical latitudes 45 blue supergiant 45 interglacial 45 planetary nebulas 45 lava flows 45 orbits 45 latitudes 45 galactic equator 45 constellation Ursa Major 45 noctilucent cloud 45 maxima 45 spiral nebulae 45 faraway galaxies 45 northern latitudes 45 multi decadal signal 45 observable phenomena 45 carbon dioxide concentrations 45 BLG #L 45 lobate scarps 45 Ordovician extinction 45 abundances 45 retrograde orbits 45 gamma ray flashes 45 anisotropy 45 emission nebula 45 interstellar dust 45 exosphere 45 tidally 45 superluminal 45 Current Warm Period 45 detect gravitational waves 45 submillimeter wavelengths 45 terrestrial planets 45 volcanic plumes 45 circumstellar disks 45 lenticular clouds 45 asteroidal 45 slender crescent 45 luminosity 45 volcanic tremors 45 coolings 45 UV radiation 45 CO2 concentrations 45 Iapetus 45 Venusian atmosphere 45 Medieval Warming Period 45 habitable zones 45 contrails 45 Leonid Meteor Shower 45 SNR #-#.# 45 accretion disk 45 chemtrails 45 sulphate aerosols 45 Atlantic Multidecadal Oscillation AMO 45 lunar crust 45 El Niño 45 atmospheric CO2 levels 45 extragalactic 44 star Gliese 44 Evolution Explorer 44 Andromeda galaxy 44 constellation Gemini 44 Perseid shower 44 TrES 4 44 Martian gullies 44 paleoclimatic 44 Cambrian explosion 44 deep convective clouds 44 decadal 44 magma ocean 44 faint galaxies 44 comet nucleus 44 volcanoes 44 Coma Cluster 44 solar flares coronal 44 ultraviolet imaging spectrograph 44 sparticles 44 Diviner 44 ultra violet radiation 44 GeV 44 GZK cutoff 44 moons orbiting Saturn 44 foreground galaxy 44 Martian atmosphere 44 Comet Halley 44 Fermi telescope 44 orbiting planets 44 lunar craters 44 gibbous 44 dense clumps 44 moons Europa 44 Wilkinson Microwave Anisotropy Probe 44 Patagonian glaciers 44 solitons 44 TRMM satellite 44 convective clouds 44 Serreze 44 sterile neutrino 44 geoeffective 44 Halley Comet 44 cosmic collisions 44 S#W# 44 equatorial regions 44 diffuse aurora 44 equator 44 orbiting observatories 44 Wolszczan 44 subglacial lakes 44 neutrinos 44 gravitational tides 44 cosmological 44 Cryogenian 44 Fomalhaut 44 occulted 44 maser emission 44 chlorine monoxide 44 Jupiter moons 44 attosecond 44 Earth radii 44 XMM Newton observations 44 X ray pulses 44 planetesimals 44 coccolithophores 44 Magnetic reconnection 44 Cosmic rays 44 nightglow 44 polar latitudes 44 atmospheric phenomena 44 Hawking radiation 44 supermassive 44 waning crescent 44 Cryogenian period 44 G#.# +#.# 44 Arches Cluster 44 quark gluon plasma 44 gamma ray bursts GRBs 44 atmospheric turbulence 44 SN#A 44 atmospheric disturbances 44 comet orbit 44 Mayan calendar ends 44 cometary debris 44 polar stratospheric 44 auroral emissions 44 crescent Moon 44 perigee 44 galactic bulge 44 atmospheric CO2 44 polarimetry 44 Galaxy Evolution 44 ULP cepheids 44 Yellowstone supervolcano 44 gravitational wobbles 44 femtoseconds 44 Ring Nebula 44 exoplanets planets 44 icy moon Enceladus 44 orbiting Chandra 44 Late Heavy Bombardment 44 Super Earths 44 airglow 44 ENSO neutral conditions 44 exoplanets planets outside 44 Gliese #d 44 HiRISE camera aboard 44 Flu epidemics 44 sulfate aerosol 44 Hawking Radiation 44 Cancri 44 interstellar cloud 44 gravitational wave 44 Earth 44 Leonid meteor showers 44 Swift Tuttle 44 Noachian 44 comets asteroids 44 mesospheric 44 asteroids comets 44 #.#C above 44 Scheila 44 infall 44 J# +# [002] 44 annular eclipse 44 Mimas 44 climate modelers 44 Magnetars 44 starquakes 44 SN #E 44 Microlensing 44 Orcus Patera 44 gravitationally 44 coronagraph 44 climate modellers 44 TrES 44 interstellar dust clouds 44 radial velocity method 44 inhabitable planets 44 nebular 44 Saturn moon Iapetus 44 terrestrial ecosystems 44 geoid 44 velocity dispersion 44 La Nina cooling 44 Cassini flyby 44 waxing crescent moon 44 constellation Leo 44 Supernova #A 44 Orionid meteor shower 44 spatially resolved 44 magnetospheres 44 Solar eclipses 44 permanently shadowed craters 44 SeaWiFS 44 Perseids meteor shower 44 active galactic nucleus 44 Geminid meteor showers 44 quasiparticle 44 constellation Orion 44 submillimeter galaxies 44 lithosphere 44 NASA STEREO 44 planets circling stars 44 equatorial 44 astronomer Johannes Kepler 44 atmospheric aerosols 44 cosmic ray protons 44 impactors 44 Tropical depressions 44 Pleiades star 44 BLG #Lb 44 infrared satellite imagery 44 COROT 7b 44 hydrated minerals 44 KT boundary 44 waxing gibbous moon 44 La Niña 44 NGC# 44 WFPC2 44 gravitational redshift 44 Perseids Meteor Shower 44 R Coronae Borealis 44 planetary warming 44 Meteor Showers 43 Global Surveyor 43 equatorial waters 43 gravitational tugs 43 gamma ray 43 Antarctic stratosphere 43 distant quasar 43 Solar System 43 oceanic currents 43 Tycho supernova 43 Mud volcanoes 43 Doppler shift 43 comet Tempel Tuttle 43 CMB radiation 43 Earth ionosphere 43 icy comets 43 upper troposphere 43 La Nina 43 GRACE satellites 43 astronomer 43 sodium atoms 43 excitons 43 muons 43 photons 43 dynamical evolution 43 solar radii 43 GALEX 43 gravitational lenses 43 supernovae explosions 43 Ringed Planet 43 HD# [002] 43 Einar Kjartansson geophysicist 43 Mojzsis 43 paleoclimatologists 43 carbonate minerals 43 helium atoms 43 constellation Hercules 43 aphelion 43 interannual 43 galactic magnetic 43 Pieter van Dokkum 43 climatologically 43 optical wavelengths 43 surface temperatures SSTs 43 Cepheid variables 43 El Nino Modoki 43 CoRoT 43 skywatching 43 Mpc 43 paleomagnetic 43 bearish divergence 43 climatic variations 43 Trifid Nebula 43 crustal 43 Substorms 43 Aram Chaos 43 Earth rotational axis 43 autumn equinox 43 plate tectonics 43 meteor sightings 43 Mercury retrograde 43 Eagle Nebula 43 VIRTIS 43 specular reflection 43 Konacki 43 SuperMoon 43 La Nina pattern 43 Proxima Centauri 43 vegetation greenness 43 interferometers 43 gravitational interaction