Related by context. Frequent words. (Click for all words.) 47 astronomy 46 astronomer 45 avid outdoorsman 43 avid bicyclist 43 avid hiker 43 bird watcher 42 aeronautical engineer 42 avid traveler 42 stargazer 42 electrical engineer 42 avid gardener 42 astrophysicist 42 avid reader 42 Astronomer 41 cosmologist 41 avid sailor 41 avid golfer 41 avid cyclist 41 avid fisherman 41 amateur astronomer 41 biophysicist 41 avid 41 avid sportsman 41 avid surfer 41 avid collector 40 enthusiast 40 physicist 40 palaeontologist 40 frequent contributor 39 observatory 39 Physicist 39 astronomical observatory 39 aficionado 39 educator 39 Radio Astronomy Observatory 39 avid skier 39 ornithologist 39 astrobiologist 39 encyclopedic knowledge 39 naturalist 38 ornithology 38 planetarium 38 Astronomy 38 NASA Goddard 38 astrophysics 38 adjunct professor 38 woodworker 38 birdwatcher 38 particle physicist 38 historian 38 NRAO 37 adjunct scholar 37 mechanical engineer 37 planetary scientist 37 avocation 37 adjunct associate professor 37 theoretical physicist 37 FamilySecurityMatters.org Contributing Editor 37 avid bowler 37 insatiable curiosity 37 Phil Plait 37 entomology professor 37 Palomar Observatory 37 emeritus professor 37 avid hunter 37 watercolorist 37 Kitt Peak 37 http:/profnet.prnewswire.com/Subscriber/ExpertProJim Argue 36 herpetologist 36 adjunct instructor 36 glassblower 36 dabbler 36 voracious reader 36 paranormal investigator 36 painter sculptor 36 astrophysical 36 Smithsonian Astrophysical Observatory 36 electromagnetics 36 buff 36 horticulturalist 36 composer arranger 36 atmospheric chemistry 36 freelance writer 36 Civil War buff 35 Planetarium 35 free lance writer 35 wildlife ecologist 35 mathematician 35 Egyptologist 35 fascinated 35 polymath 35 ethnomusicologist 35 Exploratorium 35 adjunct faculty member 35 glassblowing 35 composer conductor 35 ecologist 35 semiretired 35 tinkerer 35 Adjunct Professor 35 ceramist