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
Object to Be Destroyed "Qualite Excelsior" company. The other element is a small cutout of a black-and-white photograph of a woman's eye. The particular metronome is a mass-produced product that might be commonly found in many homes. It was probably secondhand when Man Ray reconfigured it as an art object, as it is marred, worn, missing minor parts and stands on mismatched feet, though its mechanism is in fair working order. Its box is made of wood, but its internal elements are made of metal. (Illustration here.) Its front door was removable. The original "Object to Be Destroyed" was created in 1923. (See Readymades