* Astronomy

The final launch of the N-1 Rocket was on November 23, 1972.

Vehicle serial number 7L - regular Soyuz 7K-LOK (Soyuz 7K-LOK No.1) and dummy LK module-spacecrafts for Moon flyby - the engines ran for 106.93 seconds after which pogo oscillation of the first stage caused engine cutoff (a problem which also plagued the engineers of the US Saturn V) at 40 km altitude; a programmed shutdown of some of the engines to prevent over-stressing of the structure led to an explosion of the oxygen pump on engine number 4. The vehicle disintegrated.
Read more

Spoiler