 How was Dr. Mansard's radio and ship drive destroyed?
“If Dr. Mansard succeeded in landing on Jupiter, why didn't anyone ever hear from him again?” she demanded. The ship that they boarded on Moon Nine was one of the newer ships that could attain a hundred-mile-per-second velocity and take a hyperbolic path to Earth, but it would still require fifty-four days to make the trip. She told him only that she was a messenger, sent out to Ganymede to pick up some important papers and take them back to Earth. Dr. Mansard and his wife had disappeared into the turbulent atmosphere of Jupiter just after his invention of the surgiscope, and it had been developed by Dom Blessing.
 Blessing intentionally ruined it in the hopes that Mansard would die
 Dr. Mansard destroyed it himself to eliminate any record of his survival  It was never destroyed  Blessing intentionally ruined it in the hopes that Mansard would die  It could not withstand the harsh elements of Jupiter's atmosphere