Related by context. Frequent words. (Click for all words.) 62 planet Uranus 61 Geminid meteor shower 61 Lunar eclipse 59 constellation Leo 58 Comet McNaught 58 Jupiter Saturn 57 Uranus 56 constellation Perseus 56 Venus 55 Lunar Eclipse 55 ringed planet 55 moonrise 55 perihelion 55 moonless 55 innermost planet 55 Leonid meteor shower 54 Venusian 54 polar vortex 54 Perseid meteor shower 54 Andromeda Galaxy 54 ecliptic 53 aurorae 53 Geminids 53 Perseids 53 sun 53 HD #b [002] 53 Oort Cloud 52 occultation 52 sunrise 52 constellation Orion 52 Scorpius 52 wispy clouds 51 Sunspots 51 meteor shower 51 Flyby 51 perigee 51 Skywatchers 51 Olympus Mons 51 equinox 51 NASA Cassini 50 partial lunar eclipse 50 crescent moon 50 Spica 50 celestial 50 planet orbits 50 extrasolar planet 50 Saturn moon 50 moon 50 Fomalhaut 50 solar corona 50 unaided eye 50 Leonids 50 NASA Aqua 50 skywatchers 50 Cancri 50 puffy clouds 50 annular eclipse 49 supermoon 49 interplanetary spacecraft 49 Crab Nebula 49 autumnal equinox 49 sky gazers 49 moon Charon 49 orb 49 moon Titan 49 Pleiades 49 meteor showers 49 Galaxy Evolution 49 Earth magnetosphere 49 Mimas 49 rover Opportunity 49 Perseid 49 sunbeams 49 NASA Cassini spacecraft 49 COROT 49 distant galaxy 48 Rover Opportunity 48 Galileo spacecraft 48 WASP #b 48 orbiting 48 Sagittarius 48 Betelgeuse 48 reddish hue 48 Jupiter 48 Saturn moons 48 Messenger spacecraft 48 Today Mostly sunny 48 dust devils 48 Opportunity rover 48 comet 48 Orion Nebula 48 sky 48 summer solstice 48 Comet Tempel 1 48 faintly visible 47 sunrays 47 Jupiter moons 47 lunar eclipse 47 elliptical orbit 47 Earthlike 47 New Horizons spacecraft