Related by context. Frequent words. (Click for all words.) 62 geomagnetic field 61 coronal mass ejection 55 #/#Z 54 magnetic reconnection 54 solar corona 53 geomagnetic storm 53 coronal mass ejections 52 X ray emission 51 CMEs 50 geomagnetic storms 50 sunspot cycle 49 ionized gas 49 meteoroids 49 Earth magnetosphere 49 Geminids 49 geomagnetic 49 auroral 49 constellation Leo 48 sunspot 48 substorms 48 Perseid meteor shower 48 accretion disk 48 Leonid meteor shower 48 solar irradiance 48 Perseids 48 Crab Nebula 47 magnetosphere 47 supernova explosion 47 magnetar 47 Gamma ray bursts 47 solar flares 47 annular eclipse 47 meteor shower 47 constellation Perseus 47 explosive eruptions 46 convective 46 sunspot numbers 46 planet orbits 46 Leonids 46 hydrological cycle 46 Phaethon 46 unaided eye 46 poleward 46 ecliptic 46 visible wavelengths 46 aurora 46 star Gliese 46 perigee 46 galaxy cluster 46 supernova remnant 45 Saturn moon Enceladus 45 gamma ray burst 45 ejecta 45 partial lunar eclipse 45 autumnal equinox 45 Solar Dynamics 45 ITCZ 45 temperature gradient 45 supermoon 45 cyclonic circulation 45 interstellar dust 45 equinoxes 44 anticyclone 44 meteoroid 44 circular orbit 44 sunspots 44 neutron star 44 Tonight Showers 44 heaviest precipitation 44 orbits 44 comet 44 anisotropy 44 auroras 44 solar nebula 44 volcanism 44 equatorial Pacific Ocean 44 equatorial Pacific 43 Comet Tempel 1 43 vertical wind shear 43 northwestward 43 Today Mostly sunny 43 ringed planet 43 monsoon trough 43 constellation Orion 43 planetary nebula 43 umbra 43 cosmic ray 43 pyroclastic flow 43 occultation 43 Sunspots 43 volcanic activity 43 microlensing 43 dust devils 43 spiral galaxy 43 Mimas 43 northeasterly 43 sunspot activity 43 corona 43 Kilauea volcano 43 supernova explosions 43 quasar