1. The X123 primary science instrument was fully flight-qualified on two sounding rocket flights . 2. They were first detected in the June 8, 1968 flare observation during a rocket flight . 3. There are three main methods of doing so : sounding rocket flights , balloons, and satellites. 4. President Kennedy reportedly had decided Glenn was too popular to risk his life with another rocket flight . 5. They were first observed in the two 1970 rocket flights which also detected " coronal holes ". 6. It's not a huge problem for rocket flights because you spend so little time within that danger zone. 7. The detection of X-ray emission from Perseus XR-1 occurred during an Aerobee rocket flight on March 1, 1970. 8. His vision inspired much of the space program, but his first rocket flight went all of 41 feet. 9. H-II rocket flight 5 and flight 8 failed to launch in a row, M-V failed to launch even flight 4. 10. The Little John rocket flight is stabilized by applying spin to the rocket while on the launcher, just before firing.