This icy moon was discovered by the French astronomer Audouin Dollfus in 1966. Dr. Jemison is a medical doctor and a surgeon, with engineering experience. She was accepted into NASA's astronaut program in 1987. Dr. Jemison founded the International Science Camp in Chicago in 1994, a program designed to interest children in science and space. JETS Jets are blasts of particles that are emitted by an active galactic nucleus or a pulsar.
Jets only occur in pairs, going in opposite directions.
It is called the jet stream because the first people who encountered the jet stream were pilots who described it as though the wind was being propelled from a jet engine. Located near Beta Crucis, it was discovered by Abbe Lacaille when he was in South Africa from 1751 to 1752. This very young cluster is estimated to be under 10 million years old and is about 7500 light-years away from us. A joule is the amount of work done by a force of one newton acting through one meter. JPL JPL stands for Jet Propulsion labratory.