Along with the rest of the Soviet manned lunar programs, the N1 was kept secret almost until the collapse of the Soviet Union in December 1991; information about the N1 was first published in 1989.
Bersama dengan seluruh program penerbangan berawak ke bulan Soviet, N1 tetap dirahasiakan sampai menjelang runtuhnya Uni Soviet bulan Desember 1991; informasi tentang N1 pertama kali dipublikasikan tahun 1989.