Courtesy of The Swiss Post, Stamps & Philately: 131
Thinkstock: © Robert Corse: 493
U.S. Army/Spc. Michael J. MacLeod: 291
© Steven Whitney at 25yearsofprogramming.com: 461
© Rien van de Weigaert, www.astro.rug.nl/~weygaert: 63
© Robert Webb using Stella4D software, http://www.software3d.com: 259
Courtesy of Wikimedia Foundation: 47, 71, 103, 110, 113, 161, 164, 170, 172, 174, 196, 230, 244, 264, 278, 321; Abgent/Kosi Gramatikoff/Edited by Seth Miller: 429; The Air Force Research Laboratory’s Directed Energy Directorate: 427; Apple2000: 335; Armand69: 67; Avenue: 237; Clement Bardot: 487; FastLizard4: 455; Steven Fruitsmaak: 45; Fvoigtsh: 413; Eric Gaba/derivative work by Matthew Stevens: 187; Google cultural Institute: 485; Houghton Library: 262; Robert Huffstutter: 277; Ricardo Liberato: 33; © 2005 Richard Ling: 401; Heike Lochel: 379; NARA: 371; NASA: 377; Orientalist: 297; Osborne House, Isle of Wight: 507; Heinrich Pniok: 273; Sage Ross: 85; Stefan scheer (photographer)/Stefanie Krull, Neanderthal Museum: 499; Siemens AG Pressbilder/Presspictures: 261; Softeis: 105; Ryan Somma: 41; Tekashifuka: 287; Carsten Ullrigh: 169; University of Toronto, Wenceslas Hollar Digital Collection: 97; U.S. Army Photo: 375; U.S. Army/Ed Westcott: 369; U.S. DOE: 373; Uppsala University: 137; Wel. come Collection: 87, 188; www.glofish.com: 459; Tom Yates: 359
Yale University/Beinecke Rare Book and Manuscript Library: 246
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