Prior to Neil Armstrong and Buzz Aldrin’s first steps on the moon during the 1969 Apollo 11 Mission, no one really new what exactly they might encounter upon arrival. Sure, the moon just looked like a big rock hanging in the sky with an inhospitable atmosphere and low gravity, but when visiting an entirely alien world boasting more unknowns than knowns you can’t take too many chances. As preparation for our first lunar encounter NASA compiled a “Chronological Catalog of Reported Lunar Events” in 1968 which detailed hundreds of observed lunar anomalies dating all the way back to the 1500’s! This report was very thorough, even omitting what it deemed to be either dubious observations or observations that could easily be explained by normal lighting conditions. In fact, it states specifically that:
A lunar event is defined here as a temporary change, other than that due merely to conditions of illumination, in the appearance of a lunar feature involving a limited area, generally a few kilometers in dimension.
Several of the observations are, indeed, quite interesting, referencing clouds, lights, and even possible volcanic activity. In all, the report offers 579 highly curious lunar events.
The entire document can be read or downloaded here: