Luna 2 also crash land on the Moon in exactly the same way. Crash landing proved useful even after soft landing was mastered. NASA used crash landings to test whether Moon craters contained ice by crashing space probes into craters and testing the debris that got thrown out. The satellite's impact made it the first man-made object to land on another celestial body. "Luna 2" carried 5 different instruments to conduct various tests while it was on its way to the Moon. The scintillation counters would be used to measure any ionizing radiation; the Cherenkov radiation detectors would be measuring for electromagnetic
Luna 15 in Mare Crisium. An audio recording of the minutes in which British technicians at the radio telescope facility in Jodrell Bank observed Luna 15's descent was first made available to the public on 3 July 2009. In a race to reach the Moon and return to Earth, the parallel missions of Luna 15 and Apollo 11 represented, in many ways, the culmination of the Space Race between the space programs of both the United States and the Soviet Union in the 1960s. The simultaneous missions became one of the first instances of Soviet–American space cooperation: the Soviet Union released Luna