Abasaa (Wikicommons): p. 73.
Air Accident Investigation Branch, United Kingdom: p. 66.
Alex Alishevskikh: p. 38.
Max Andrews: p. 191.
Boston Post: p. 68.
Celestis (Wikicommons): p. 92.
Dan Craggs: p. 88.
Federal Communication Commission: p. 91.
Flydime (Wikicommons): p. 52.
Jet Propulsion Laboratory, NASA: p. 321.
Mliu92 (Wikicommons): p. 77.
NASA: p. 41.
Oxfam East Africa: p. 19.
Polytechnic University of Milan: p. 49.
David Rydevik: p. 31.
Shutterstock: pp. 5, 7, 14, 17, 27, 30, 44, 47, 55, 58, 63, 71, 79, 81, 83, 96, 100, 105, 107, 110, 113, 116, 118, 124, 125, 128, 131, 134, 137, 140, 142, 146, 153, 157, 158, 161, 168, 170, 172, 174, 175, 178, 181, 183, 186, 194, 196, 199, 201, 203, 206, 210, 213, 216, 219, 220, 223, 225, 231, 233, 239, 240, 243, 245, 249, 252, 254, 256, 259, 262, 263, 266, 275, 278, 280, 283, 284, 288, 290, 293, 295, 298, 301, 305, 307, 310, 314, 316, 325, 326, 332, 334, 339, 340, 345, 349, 357, 359, 362, 364, 369, 373, 375.
Rick Singh: p. 273.
U.S. Air Force: p. 329.
U.S. Army: p. 34.
U.S. Geological Survey: p. 23.
U.S. National Park Service: p. 343.
U.S. Navy: p. 10.
Public domain: p. 121.