Илл. 23 Harper's Weekly, May 14, 1910

Илл. 24 Cassini Imaging Team, SSI, JPL, ESA, NASA

Илл. 25 NASA Voyager 1

Илл. 26 Heidi Hammel, Space Science Institute, Boulder, CO/Imke de Pater, University of California at Berkeley/W.M. Keck Observatory

Илл. 27 NASA/JPL-Caltech/University of Arizona

Илл. 28 Viking Project, JPL, NASA

Илл. 29 NASA Viking 1

Илл. 30 NASA/JPL/Space Science Institute

Илл. 31 ESA/NASA/JPL/University of Arizona

Илл. 32 Susan Stolovy (SSC/Caltech) et al., JPL-Caltech, NASA

Илл. 33 Steven Soter, adapted from Barney Oliver

Илл. 34 SETI League

Илл. 35 Walter Alvarez, University of California at Berkeley

Илл. 36 Don Davis (NASA)