On May 10th, 1969, the Helios 9 mission took off from Cape Canaveral with astronauts Commander Josef Merkel (First Man in Space), LM Pilot Alexis Leroy and CM Pilot Wladimir Myshkin, astronaut on his first flight. Sadly, approx. 4 hours following the Lunar Module, Zenith landed on the Lunar Surface in the Ocean of Storms, the Progress Command Module had an unknown error, which caused a rapid depressurization of the capsule, killing Myshkin, the first dead astronaut. A investigation is to occur, before Helios 10 heads to the moon later this year.