Related by context. Frequent words. (Click for all words.) 73 lunar eclipse 67 partial solar eclipse 67 partial eclipse 64 total solar eclipse 64 Perseid meteor shower 61 solar eclipse 60 meteor shower 54 Perseids 53 meteor showers 52 Stargazers 50 stargazers 50 aurora borealis 50 aurora 48 equinox 48 sunrises 46 flyby 46 solar eclipses 46 Isolated showers 46 coldest temperatures 45 vernal equinox 45 summer solstice 44 eclipse 43 auroras 43 Patchy fog 43 spring equinox 43 Halley Comet 43 meteors 43 amateur astronomers 42 winter solstice 42 patchy fog 42 Winter Solstice 42 crescent moon 42 comet 42 Great Backyard Bird 42 sunrise 42 meteor 41 Summer Solstice 41 NASA Cassini spacecraft 41 northern latitudes 41 solstice 41 Aurora Borealis 41 astronomers 40 Saturn rings 40 snow flurries 40 liftoff 40 moons 40 distant galaxy 40 coldest 39 telescope 39 amateur astronomer 39 Space Shuttle Endeavour 39 moon 39 Tornado Watch 39 infrared wavelengths 39 interstellar dust 39 moon Titan 39 telescopes 39 Spitzer Space Telescope 39 severe thunderstorm watch 39 stargazing 38 precipitation 38 Astronomical Society 38 gamma ray burst 38 planetarium 38 heaviest snowfall 38 sunsets 38 Liftoff 38 ringed planet 38 sun 38 cloudy sky 38 snowfall 38 constellations 37 dress rehearsal 37 milder temperatures 37 Astronomers 37 contrail 37 starlight 37 Daytime highs 37 cloudy 37 geomagnetic field 37 nebulae 37 THEMIS 37 heaviest rainfall 37 celestial 37 frost 37 Winter Weather 36 MESSENGER 36 fireworks extravaganza 36 celestial objects 36 Planetarium 36 XMM Newton 36 snow accumulation 36 daytime highs 36 thunderstorms 36 transits 36 Cassini spacecraft 36 extrasolar planets 35 snows 35 sunspot 35 daylight 35 Very Large Telescope