Related by context. Frequent words. (Click for all words.) 57 Fomalhaut 50 Crab Nebula 50 HD #b [002] 49 star Gliese 49 Large Magellanic Cloud 49 observable universe 49 planet orbits 48 galaxy cluster 48 supernova remnant 48 WASP #b 48 constellation Leo 48 heliosheath 47 perihelion 47 Cancri 47 distant galaxy 47 Oort Cloud 46 Andromeda galaxy 46 Andromeda Galaxy 46 unaided eye 46 Eta Carinae 45 planetary nebula 45 GeV 45 visible wavelengths 45 volcanically active 45 innermost planet 45 planetary nebulae 45 elliptical orbit 45 Gamma ray bursts 44 gamma ray burst 44 Milky Way galaxy 44 active galactic nuclei 44 globular cluster 44 Martian equator 44 quasar 44 Gliese 44 planet orbiting 44 perigee 43 Mauna Kea Hawaii 43 equatorial regions 43 Comet McNaught 43 Milky Way Galaxy 43 infrared wavelengths 43 Today Mostly sunny 43 magnetar 43 4 chars 43 orbits 43 extrasolar planet 43 sparsely inhabited 43 Sedna 43 La Silla Chile 43 geologically active 42 Orion Nebula 42 spiral galaxy 42 planets orbiting 42 wispy clouds 42 var heightLimit = 42 habitable planets 42 brown dwarf 42 solar corona 42 solar nebula 42 super Earths 42 Kuiper belt 42 umbra 42 -# degrees Fahrenheit [002] 42 UN2ND 42 geomagnetic field 42 equator 42 redshifts 41 decliners outnumbered advancers 41 accretion disk 41 circular orbit 41 Send INQ7 BREAKING 41 orbiting 41 Galaxy Evolution 41 constellation Perseus 41 Milky Way 41 rocky outcroppings 41 thermocline 41 VLBA 41 greenish brown 41 quasars 41 Betelgeuse 41 -# degrees Celsius [001] 41 var defaultHeight = 41 Pleiades 41 reddish hue 40 X ray emission 40 asteroid belt 40 magnetars 40 nebula 40 lunar poles 40 ecliptic 40 habitable zones 40 Cosmic rays 40 aurorae 40 Jupiter Saturn 40 Deneb 40 constellation Orion 40 redshift 40 radial velocity 40 dwarf galaxy