Related by context. Frequent words. (Click for all words.) 71 Leonid meteor shower 67 Perseid meteor shower 65 Geminids 59 supermoon 59 meteor shower 58 Perseids 58 Leonids 56 partial lunar eclipse 56 By Simon MacMichael Posted 55 meteor showers 55 sunspot cycle 55 constellation Leo 55 Projected completion 55 aurorae 55 autumnal equinox 54 geomagnetic storm 54 Solar Dynamics 53 Comet McNaught 53 Lunar Eclipse 53 Gamma ray bursts 53 heaviest precipitation 53 ringed planet 52 sky gazers 52 total lunar eclipse 52 constellation Perseus 52 substorms 52 rover Opportunity 52 Today Mostly sunny 51 sunspot numbers 51 Skywatchers 51 lunar eclipse 51 Northerly winds 51 Saturn moon Enceladus 51 moonrise 51 polar vortex 51 Opportunity rover 51 Vernal Equinox 51 constellation Orion 50 Southerly winds 50 Isolated showers 50 WASP #b 50 Isolated thunderstorms 50 annular eclipse 50 Kilauea Volcano 50 snowfall accumulations 50 Partly sunny skies 50 Comet Tempel 1 50 geomagnetic field 50 Increasing clouds 50 meteors 50 Hurricane Felicia 50 equinoxes 50 star Gliese 49 innermost planet 49 Tropical Storm Ana 49 geomagnetic storms 49 scattered flurries 49 orbiting telescope 49 NASA Hubble Space 49 sunspot activity 49 comet Tempel 1 49 NASA Cassini spacecraft 49 X ray emission 48 Tonight Showers 48 New Horizons spacecraft 48 unaided eye 48 equinox 48 solar irradiance 48 occultation 48 Warm temperatures 48 perigee 48 Milder weather 48 El Niños 48 spring equinox 48 orbiting observatory 48 Messenger spacecraft 48 solstices 48 comet nucleus 48 skywatchers 48 auroras 48 vernal equinox 47 Crab Nebula 47 COROT 47 orbiting Saturn 47 equatorial Pacific Ocean 47 partial solar eclipse 47 aurora borealis 47 total solar eclipse 47 Sensing Satellite LCROSS 47 Hubble observations 47 Jupiter Saturn 47 summer solstice 47 Cassini orbiter 47 coronal mass ejection 47 El Nino warming 46 Grimsvotn volcano 46 Relative humidity 46 planetary nebulae 46 planet orbits 46 infrared wavelengths 46 bintx