Classification de la Bibliothèque du CongrèsQB1-139

16th century(142) 17th century(271) academic(86) aliens(208) asteroids(57) astrobiology(234) astrology(389) astrophysics(585) biographies(136) biography(2,920) biology(277) black holes(91) children(319) children's(453) cosmology(1,471) cosmos(143) early modern(64) earth(253) education(144) educational(53) evolution(143) experiments(70) extraterrestrial(29) Extraterrestrials(149) galaxies(166) galaxy(70) Galileo(816) general science(56) geography(129) gravity(33) guide(169) guidebook(106) history(3,137) history of ideas(59) history of science(1,679) how-to(88) informational(140) inventors(50) Italy(333) Jupiter(59) juvenile(151) juvenile non-fiction(90) kids(95) maps(100) Mars(95) math(413) meteors(37) moon(382) nasa(47) natural science(292) nature(482) Newton(31) observation(63) outer space(271) philosophy of science(109) photographs(86) photography(277) physics/astronomy(46) picture book(459) planet(63) planets(1,288) Pluto(43) popular science(429) quasars(21) reference(1,843) religion(265) Renaissance(282) rockets(39) science(14,993) science and technology(114) science biography(46) science nonfiction(62) scientific instruments(18) scientific revolution(51) scientists(271) solar system(911) space exploration(214) space flight(50) stars(1,669) time(84) universe(616) xenobiology(16)