This volume investigates the intersection of reported unidentified flying object phenomena and the contemporary advancements in human space exploration during the late 1970s. Authors Ernest Jahn and Margaret Sachs synthesize public reports of aerial anomalies with the technical objectives of the Viking Mars mission. The text serves as a snapshot of the era's fascination with extraterrestrial possibilities and the burgeoning reality of interplanetary travel.

This work is categorized as a historical artifact of 1970s ufology and space-age optimism. Readers often note that the text provides a specific cultural perspective on how the public perceived the potential for extraterrestrial contact during the early years of the Viking program.