 As a result, the result remains controversial.Since the Apollo Program, there has been at least one independent investigation into the validity of the NASA claim.Leonard D. Jaffe, a Surveyor program scientist and custodian of the Surveyor 3 parts brought back from the Moon, stated in a letter to the Planetary Society that a member of his staff reported that a "breach of sterile procedure" took place at just the right time to produce a false positive result.