Related by context. Frequent words. (Click for all words.) 58 supernova explosion 58 substorms 57 auroral 56 spacetime 56 geomagnetic 55 geomagnetic storms 54 supernova explosions 54 solar flares 54 magnetar 54 X ray emission 54 sunspot activity 54 astrophysical 53 subatomic particle 53 Earth magnetosphere 52 cosmic ray 52 Kuiper belt 52 supermoon 52 cosmological 52 singularities 52 phenomena 52 magnetosphere 52 meteoroid 51 Eta Carinae 51 dwarf galaxy 51 elliptical galaxies 51 sunspot cycle 51 GRBs 51 magnetic 51 sunspots 50 Gamma ray bursts 50 magnetic fields 50 auroras 50 gamma ray burst 50 perturbation 50 supernova 50 glaciation 50 dynamical 50 volcanism 50 Younger Dryas 50 planetary 50 globular cluster 50 cometary 50 oscillations 50 asteroid 49 distant galaxy 49 WIMPs 49 geomagnetic field 49 interstellar medium 49 planets 49 cosmic 49 coronal mass ejections 49 globular clusters 49 polar caps 49 mid latitudes 49 comet 49 Uranus 49 occultation 49 meteoroids 49 microlensing 49 Saturn moon Enceladus 49 superfluid 49 accretion disk 49 perturbations 49 geomagnetic storm 49 Martian 49 cosmic rays 48 rocky planets 48 starbursts 48 aurora 48 magnetised 48 interstellar space 48 sunspot 48 gravitational waves 48 atmospheric circulation 48 excitons 48 galaxy cluster 48 cataclysmic 48 Andromeda galaxy 48 comet nucleus 48 lithosphere 48 ejecta 48 gravitational wave 48 comets 48 supernovae 48 neutrino 48 Gliese #g 48 oscillation 48 Sunspots 48 earths 48 subatomic particles 48 heliosphere 47 Volcanic eruptions 47 equatorial regions 47 icecap 47 interglacial period 47 quantum mechanics 47 planet orbiting 47 Mayan calendar 47 coronal mass ejection 47 quantum entanglement 47 volcanic eruptions