High Quality Content by WIKIPEDIA articles! Luna E-8-5M No.412, also known as Luna Ye-8-5M No.412, and sometimes identified by NASA as Luna 1975A, was a Soviet spacecraft which was lost in a launch failure in 1975. It was a 5,300-kilogram (12,000 lb) Luna E-8-5M spacecraft, the second of three to be launched. It was intended to perform a soft landing on the Moon, collect a sample of lunar soil, and return it to the Earth.