Pioneering space project attracts mass attention

摘要

Launched to investigate interplanetary space between the orbits of Earth and Venus, the US space probe Pioneer V earned the distinction of confirming the existence of interplanetary magnetic fields.rnReporting on the probe's purpose in the wake of its launch The Engineer wrote that 'the experiments being undertaken while the probe is in orbit include the measurement of high-energy, or "hard" radiation, particularly that proceeding from the sun'.