Luna 3
The final successful launch of a Luna 8K72 took place 4 October 1959. The Luna 3 spacecraft took the first photographs of the far side of the Moon.
The eighth flight of a Luna 8K72 (March 1960) ended 435 seconds after launch when the Blok E upper stage developed insufficient thrust, causing the Luna probe to reenter the atmosphere and burn up.
The ninth flight of a Luna 8K72 (April 1960) failed when the Blok K strap-on booster developed only 75% thrust at liftoff, breaking away from the launch vehicle, which then disintegrated, the strap-ons flying in random directions and exploding as they impacted the ground. The Blok I core stage then crashed into a salt lake.
Read more about this topic: Luna (rocket)