Published online by Cambridge University Press: 12 April 2016
The Minnesota zodiacal light experiment on board OSO-5 was reactivated in July of 1974, after having been off for 1-1/2 years and operated successfully through August 1975 at which time the satellite was again turned off. This gives another yearte worth of data to compare with that taken by the same experiment from January 1969 to January 19731,2,3. This paper reports on the seven year comparison.