Related by context. Frequent words. (Click for all words.) 56 Scorpius 56 Betelgeuse 53 Cassiopeia 53 Procyon 51 Spica 51 Pleiades 50 Ursa Major 50 Big Dipper 50 nebula 50 Aldebaran 49 Milky Way Galaxy 49 Andromeda 47 constellation 47 Eta Carinae 47 distant galaxy 47 Sedna 47 Uranus 46 galaxy 46 Ophiuchus 45 Pollux 45 planet orbiting 45 constellations 45 quasar 45 Nebula 45 nebulae 44 dwarf galaxy 44 Orion Nebula 44 X ray emission 44 HD #b [002] 44 Sunspot 44 Cygnus 44 aurora 43 Large Magellanic Cloud 43 Antares 43 Phobos 43 Alpha Centauri 43 unaided eye 43 Aurora Borealis 43 orb 42 Io 42 Milky Way 42 Perseus 42 Sagittarius 42 spiral galaxy 42 occultation 42 interferometer 42 fainter 42 Regulus 41 supernovae 41 Orion 41 Cyclops 41 supernova explosions 41 supernova explosion 41 Ganymede 40 terrestrial planets 40 galaxy cluster 40 spiral galaxies 40 globular clusters 40 interferometry 40 FireFly 40 gamma rays 40 equator 40 extrasolar planets 40 quasars 39 galactic 39 ESO Very Large Telescope 39 brown dwarf 39 Milky Way galaxy 39 SDSS 39 Quasar 39 XMM Newton 39 redshift 39 ellipse 39 circular orbit 38 supernova 38 Gliese 38 bluish 38 reflector 38 sunspot 38 chargeability anomaly 38 Neptune 38 perigee 38 Charon 38 planets 38 gamma ray 38 Altair 38 planets orbiting 38 GRB 38 extrasolar planet 38 pulsar 38 Titan 38 infrared wavelengths 38 Pisces 38 NNW 38 suns 38 Jupiter 38 Saturn 37 celestial objects 37 gamma ray burst 37 twinkles 37 cosmic ray