Related by context. Frequent words. (Click for all words.) 66 skywatchers 62 Stargazers 61 star gazers 59 stargazers 56 astronomers 55 amateur astronomers 53 Perseid meteor shower 52 Astronomers 50 total solar eclipse 50 observatories 50 Perseids 50 unaided eye 49 partial eclipse 49 total lunar eclipse 49 meteor shower 47 aurora 47 telescopes 47 meteors 46 Orion Nebula 46 meteor showers 46 auroras 46 partial solar eclipse 46 celestial objects 46 XMM Newton 46 lunar eclipse 45 Telescopes 45 Saturn rings 45 optical telescopes 45 Clear skies 44 occultation 44 skies 44 Spitzer Space Telescope 44 cloudy sky 44 astrophysicists 44 nebulae 44 flyby 43 aurora borealis 43 X ray emission 43 moon Titan 43 solar eclipse 43 comet nucleus 43 comet 43 Cloudy skies 43 cloudless skies 42 extrasolar planets 42 tundra swans 42 Birders 42 infrared wavelengths 42 lightning flashes 42 globular clusters 42 gamma ray burst 42 distant galaxies 42 partly cloudy sky 42 lunar eclipses 42 GRBs 42 ESO Very Large Telescope 42 ringed planet 41 cosmologists 41 Milky Way Galaxy 41 comet dust 41 Saturn moon 41 NASA Cassini spacecraft 41 physicists 41 Cassini 41 distant galaxy 41 extrasolar planet 41 Festivalgoers 41 optical telescope 41 sky 41 interstellar dust 41 Saturn moons 41 Birdwatchers 40 TOURISTS 40 X ray Observatory 40 starry 40 Pleiades 40 comets 40 Thick fog 40 astronomer 40 Mostly sunny skies 40 planets orbiting 40 celestial 40 Partly cloudy skies 40 gamma ray bursts 40 astronomical observations 40 Milky Way 40 sunrises 40 spiral galaxy 40 snowflakes 40 super Earths 39 astronomy 39 ejecta 39 blue skies 39 overcast 39 sunspot 39 telescope 39 Weather forecasters 39 Milky Way galaxy 39 planet orbiting 39 solar eclipses 39 Concertgoers