Figure 3.11.—A spacecraft sent out to the stars to discover and explore new worlds.
Robert A. Freitas and William P. Gilbreath
1980
<a class="external free" href="https://en.wikisource.org/wiki/Page:Advanced_Automation_for_Space_Missions.djvu/77">https://en.wikisource.org/wiki/Page:Advanced_Automation_for_Space_Missions.djvu/77</a>