Related by context. Frequent words. (Click for all words.) 49 supermoon 48 geomagnetic storms 46 equinoxes 45 equinox 45 cosmic ray 44 Ophiuchus 44 occultation 44 sunspot activity 44 substorms 44 perigee 44 Uranus 43 autumnal equinox 43 winter solstice 43 solstice 42 Sunspots 41 Geminids 41 meteor shower 41 spring equinox 41 climatological 41 cosmic 41 phenomena 40 gravitational lensing 40 anthropogenic climate 40 Medieval Warm Period 40 geomagnetic 40 Leonids 40 oscillations 40 lunar eclipses 40 vernal equinox 40 perturbations 40 astrological 40 planetary 40 ringed planet 39 meteor showers 39 outer planets 39 cosmologists 39 Sagittarius 39 plate tectonics 39 Earth magnetosphere 39 Saturnalia 39 Perseids 39 magnetosphere 39 Perseid meteor shower 39 astrophysical 39 mass extinctions 38 volcanism 38 polar caps 38 mankind 38 precession 38 gravitation 38 humankind 38 summer solstice 38 celestial 38 atmospheric circulation 38 aurora 38 astronomical observations 37 solar eclipse 37 coronal mass ejection 37 unpredicted 37 Pisces 37 Lunar Eclipse 37 GRBs 37 planets 37 sunspots 37 volcanic eruptions 37 humans 37 X ray emission 37 celestial bodies 37 coronal mass ejections 37 Jesus resurrection 37 greenhouse warming 37 cosmically 37 earths 37 lunar eclipse 36 ecliptic 36 glaciation 36 pulsations 36 magnetar 36 Winter Solstice 36 gamma ray burst 36 planet 36 comet nucleus 36 moon Titan 36 synchronicity 36 Saturn rings 36 Eta Carinae 36 martian 36 vortexes 36 moon 36 astronomers 36 icecap 36 Earth 36 paradigm shifts 36 polar 36 dynamical 36 cataclysmic 36 continental drift 36 auroras 35 magnetic fields 35 cosmos 35 Apophis