LC ClassificationTL789.A4

1950s(112) 1960s(280) 1970s(77) abduction(91) accidents(62) adventure(218) alien(179) alien abduction(387) alien contact(33) Alien Encounters(26) aliens(651) ancient astronauts(61) astrophysics(63) autobiography(691) aviation(296) Biographies(218) biography(3,000) careers(78) Challenger(99) children(236) children's(339) conspiracy(268) conspiracy theory(81) cosmology(67) cover-up(36) crop circles(24) discovery(48) earth(83) engineering(453) exploration(521) extraterrestrial(56) extraterrestrials(737) flight(84) futurism(89) gravity(38) history(4,567) history of science(221) informational(154) jobs(55) juvenile(185) juvenile literature(77) juvenile non-fiction(79) Mars(299) missiles(21) moon(1,604) nasa(3,103) occult(245) os(56) outer space(485) paranormal(1,004) photographs(79) photography(223) picture book(477) pilots(53) planets(207) popular science(78) pseudoscience(128) reference(477) rockets(471) Russia(165) science(5,970) Science & Technology(151) science fiction(700) science nonfiction(47) scientists(56) skepticism(64) solar system(323) space colonization(108) space exploration(2,728) space flight(1,524) space station(126) space stations(110) spacecraft(207) spaceship(40) speculation(61) stars(63) the 60s(25) universe(79) usa(506) women(211)