Explorer S-45 (satellite)

Explorer S-45, also known as BE-C, was a satellite launched as part of the NASA Explorer program. Its primary objective was to conduct direct measurements of the Earth's radiation belts. Specific scientific goals included determining the spatial distribution, energy spectrum, and time variations of charged particles trapped within the belts. The satellite was designed to contribute to a broader understanding of the magnetosphere and the effects of solar activity on the near-Earth space environment. The "BE" designation stood for "Beacon Explorer", emphasizing its use of radio beacons for tracking and scientific data transmission. The data collected by Explorer S-45 helped refine existing models of the radiation belts and improve predictions of space weather. More detailed information regarding its orbital parameters, instrumentation, and specific findings can be found in publicly available NASA technical reports and scientific publications.