The question What solar event caused massive aurora borealis in the mid 1960's? reminds me again of a stunningly bright aurora that I saw circa 40°N circa 1967, and after reading the comments and answers on that page I've considered the following:
- Orbiting Solar Observatory program (OSO)
OSO-3 Launch date March 8, 1967
This comment mentions :
The May 1967 aurora is quite famous for being one of the occasions when we nearly stumbled into nuclear war.
Question: Did OSO-3 or any other spacecraft or ground telescope record the solar activity that is likely the cause of the May 1967 aurora?