Related by context. Frequent words. (Click for all words.) 51 amateur astronomers 50 paleontologists 50 astronomers 50 meteorite 49 meteorites 48 astrophysicists 48 cosmologists 46 birders 45 Meteorites 45 telescopes 45 astronomer 45 prospectors 45 observatories 45 comet dust 44 physicists 44 treasure hunters 44 geocachers 44 palaeontologists 44 dinosaur bones 43 birder 43 astrobiology 43 entomologists 43 archeologists 43 scientists 43 amateur astronomer 42 treasure hunter 42 fossils 42 explorers 42 galaxy clusters 42 interstellar dust 42 WM Keck Observatory 42 Saturn moons 42 bird watchers 42 meteor 42 geophysicists 41 tyrannosaurs 41 geneticists 41 Lowell Observatory 41 stargazers 41 birdwatchers 41 planetary science 41 geologist 41 NASA Astrobiology Institute 41 ghost hunters 41 paleontological 41 bird watcher 41 geologists 40 Astronomers 40 palaeontologist 40 geographers 40 botanists 40 extrasolar planets 40 comet 40 astronomy 40 extrasolar planet 40 archaeologist 40 dinosaur fossils 40 astrophysicist 40 archaeologists 40 petrified wood 40 planetary scientist 40 sedimentary rock 40 theoretical physicist 40 adventurers 40 archeologist 40 exoplanet 39 climatologists 39 winged creatures 39 geochemist 39 paleontology 39 asteroid 39 oceanographers 39 Radio Astronomy Observatory 39 telescope 39 herpetologist 39 Meteorite 39 observatory 39 paleontologist 39 biologists 39 astrobiologist 39 fisheries biologists 39 ecologists 39 woolly mammoths 39 comet Wild 39 XMM Newton 38 expeditions 38 cosmic dust 38 THEMIS 38 Carnegie Institution 38 beekeepers 38 conservationists 38 ornithologist 38 dwarf galaxies 38 ornithologists 38 cosmologist 38 Planetary Science 38 NASA Cassini spacecraft 38 alien spacecraft 38 gravitational waves 38 tiny speck 38 astrophysics