Related by context. Frequent words. (Click for all words.) 52 Eta Carinae 51 Andromeda galaxy 51 planetary nebulae 51 planetary nebula 50 Orion Nebula 50 constellation Leo 50 WASP #b 49 constellation Orion 49 supernova explosion 49 X ray emission 49 star Gliese 49 supernova remnants 49 Crab Nebula 49 nebula 49 nebulae 49 supernova remnant 49 magnetar 49 globular cluster 48 starbursts 48 Andromeda Galaxy 48 supernova 48 supernova explosions 48 accretion disk 48 Andromeda 48 Gamma ray bursts 48 magnetars 47 dwarf galaxy 47 aurorae 47 galaxy cluster 47 blindingly bright 47 Lunar eclipse 47 distant galaxy 46 supergiant 46 Large Magellanic Cloud 46 supernovas 46 planets circling 46 Scorpius 46 Fomalhaut 46 Betelgeuse 45 colliding galaxies 45 Milky Way 45 starburst 45 Hubble observations 45 Oort Cloud 45 planet orbits 45 HD #b [002] 45 Kuiper Belt objects 45 constellation Perseus 45 shines brightly 45 Milky Way Galaxy 44 celestial object 44 pulsar 44 active galactic nuclei 44 ringed planet 44 GRB # 44 Kuiper belt 44 Pulsars 44 supernovae 44 galaxy 44 planet orbiting 44 globular clusters 44 quasar 44 solar corona 44 auroral 44 Filippenko 44 twinkles 44 suns 43 luminous 43 haloes 43 galactic 43 Deneb 43 constellation 43 Mimas 43 La Silla Chile 43 Galaxy Evolution 43 Sunspots 43 XMM Newton 43 galaxies 43 polar vortex 43 spiral galaxy 43 ionized gas 43 Cancri 43 gamma ray bursts 43 dwarf galaxies 43 Cepheids 42 Aldebaran 42 galaxy clusters 42 pulsars 42 gamma ray burst 42 Arcturus 42 Cassiopeia 42 elliptical galaxies 42 moons 42 Leonids 42 gravitationally 42 spiral galaxies 42 Astrophysicists 42 solar nebula 42 orbiting planets 42 constellations 42 phosphorescence