Related by context. Frequent words. (Click for all words.) 69 occultation 60 unaided eye 59 HD #b [002] 58 distant galaxy 57 ecliptic 57 Eta Carinae 56 XMM Newton 56 COROT 56 Sedna 55 planet orbiting 55 gravitational lensing 55 supermoon 55 Pleiades 55 Betelgeuse 55 X ray emission 55 Andromeda galaxy 54 Andromeda Galaxy 54 perigee 54 gamma ray burst 54 Geminids 54 GRBs 54 orbits 53 galaxy cluster 53 Jupiter moons 53 astronomical observations 53 extrasolar planet 53 Scorpius 53 Saturn moon 53 extrasolar planets 52 nebulae 52 Orion Nebula 52 ringed planet 52 aurora 52 astronomers 52 auroral 52 Perseids 52 elliptical galaxies 52 infrared wavelengths 52 celestial 52 planets orbiting 52 Uranus 52 dwarf galaxy 52 quasar 52 magnetar 51 Leonids 51 fainter 51 redshift 51 brown dwarf 51 nebula 51 moon Titan 51 substorms 51 gamma ray bursts 51 celestial bodies 51 super Earths 51 equinox 51 brown dwarfs 51 supernova explosions 51 ESO Very Large Telescope 51 Milky Way Galaxy 51 ejecta 50 equinoxes 50 planets 50 constellation 50 rocky planets 50 skywatchers 50 comet 50 spiral galaxies 50 supernova remnant 50 Saturn moon Enceladus 50 moonrise 50 Iapetus 50 supernova explosion 50 starlight 50 coronal mass ejection 50 Cassiopeia 50 partial lunar eclipse 50 orbiting 50 umbra 50 vernal equinox 50 orbited 50 supernova 49 Jupiter Saturn Uranus 49 Ophiuchus 49 exoplanets 49 cometary 49 moons 49 exoplanet 49 globular cluster 49 meteoroids 49 Spitzer Space Telescope 49 interstellar dust 49 Saturn rings 49 Earth magnetosphere 49 gravitationally 49 comet nucleus 49 outer planets 49 meteor shower 48 supernovae 48 celestial objects 48 Spica 48 Very Large Telescope