    Sentence 1: Who was Kennedy's  science adviser that opposed manned  spacecraft flights?    Sentence 2: Kennedy's science advisor  Jerome Wiesner, who had expressed  his opposition to manned spaceflight  to Kennedy before the President  took office, and had opposed the  decision to land mengon the Moon,  hired Golovin, who had left NASA,  to chair his own "Space Vehicle  Panel", ostensibly to monitor, but  actually to second-guess NASA's  decisions on the Saturn V_ launch  vehicle and LOR by forcing Shea,  Seamans, and even Webb to defend  themselves, delaying its formal  announcement to the press on July