Related by context. Frequent words. (Click for all words.) 58 heavily cratered 56 moon Enceladus 55 Carina Nebula 55 exosphere 55 Saturn moon 54 reddish hue 54 icy moons 53 polar vortex 53 Eagle Nebula 53 stellar nurseries 52 Andromeda galaxy 52 Valles Marineris 52 brownish gray 51 Martian equator 51 moonlets 51 Oort Cloud 51 Earthlike 51 greenish yellow 51 protostars 50 Martian dust 50 galaxy NGC 50 granite cliffs 50 WASP #b 50 moon Titan 50 Kuiper Belt objects 50 Kuiper belt 50 Orion Nebula 50 Olympus Mons 49 photosphere 49 reddish color 49 Saturn moon Enceladus 49 hydrothermal vent 49 volcanic vents 49 colliding galaxies 49 Galileo spacecraft 49 planet Uranus 48 Mimas 48 planetary nebula 48 -# degrees Fahrenheit [002] 48 Titan Saturn 48 nimbus 48 nebula 48 moon Europa 48 reddish 48 icy crust 48 lithosphere 48 martian atmosphere 48 planetary nebulae 48 planetoid 48 lava tubes 48 greenish brown 48 basaltic 48 evergreen forests 48 purplish red 48 bluish green 48 ejecta 47 gaseous planets 47 Crab Nebula 47 Clumps 47 Iapetus 47 cumulus clouds 47 Lake Vostok 47 temperate forests 47 greyish 47 planetesimals 47 yellowish 47 igneous rocks 47 stippled 47 hot Jupiters 47 brownish red 47 moons 47 protoplanetary disk 47 continental crust 47 greenish gray 47 orange hue 47 sandstone formations 47 underbellies 47 geologically active 47 tropopause 46 cirrus clouds 46 blobs 46 X ray emission 46 cigar shaped 46 Solar flares 46 nebulas 46 wispy clouds 46 Venusian 46 scaly skin 46 polar caps 46 constellation Gemini 46 Galaxy Evolution 46 star Gliese 46 bluish 46 ionized gas 46 lavas 46 lunar soil 46 clathrates 46 grayish 46 mottled 46 basalts 46 Saturn moons