 It was equipped to estimate the Moon's mass and topography of the poles, record the distribution and velocity of micrometeorites, and study radiation, magnetic fields, and low frequency electromagnetic waves in space.A mid-course propulsion system and injection rocket would have been the first United States self-contained propulsion system capable of operation many months after launch at great distances from Earth and the first U.S. tests of maneuvering a satellite in space.Nearly a year passed between the first Atlas-Able launch in November 1959 and this second attempt due to a shortage of Atlas boosters as well as intense competition between NASA and the U.S. Air Force for use of the pads at Cape Canaveral.