Related by context. Frequent words. (Click for all words.) 47 Meteor Crater 37 Comet Tempel 1 36 comet nucleus 36 Earth magnetosphere 36 RQ# 36 Messenger spacecraft 34 jagged peaks 33 boulder 33 comet dust 33 swath 33 outer crust 33 thinly populated 33 Valles Marineris 32 robotic spacecraft 32 granite boulder 32 sliver 32 Stardust spacecraft 32 comet 32 slices 31 Milky Way Galaxy 31 sq mile 31 meteoroid 31 Jewish settlement blocs 31 flyaway foam 31 Kuiper belt 31 landmass 31 crevice 31 chunks 31 lunar soil 31 slice 31 fiery gases 30 robotic rover 30 Petermann Glacier 30 sparsely populated 29 statelet 29 comet Hartley 2 29 Feeder steers medium 29 asteroid Itokawa 29 JPL manages 29 Coarsely chop 29 supercontinent 29 rocky outcroppings 28 planetoid 28 Saturn moons 28 mammoth 28 porterhouse 28 irregularly shaped 28 sliced 28 galaxy NGC 28 Bend Reservoir 28 Oort Cloud 27 peptide compounds 27 undeveloped parcels 27 Deep Impact mission 27 outermost 27 NASA Stardust spacecraft 27 twin rover Spirit 27 Feeder heifers medium 27 California lender IndyMac 27 redwood forests 27 chunk 27 tiny 27 roughly 27 spacecraft 27 sparsely inhabited 27 pea sized 26 undeveloped parcel 26 Stardust NExT 26 expanse 26 edges 26 portions 26 cryosphere 26 umbra 26 rectangle 26 wide swaths 26 wide swath 26 precarious perch 26 minuscule 26 mottled brown 26 Portion 26 lunar surface 26 marine reptile 26 Gravina Island 25 small 25 Kepler telescope 25 vast expanses 25 #/#th [007] 25 swaths 25 checkerboard pattern 25 superheated gases 25 Slicing 25 orbiting Saturn 25 slivers 25 pie 25 Alpha Magnetic Spectrometer 25 barren desert 25 enclave 24 Shuttle Atlantis 24 Bad Astronomy 24 sprawls across 24 vast expanse