At NASA, the word mission has been used throughout its many years C exploration to describe particular space programs. The astronaut who are sen these missions each has clearly defined goals, dictating what they are to do i and what kinds of data they are expected to collect. The crew on each miss varied it may include pilots, physicists, biologists, physicians and even scho teachers. The specialists on the ground, known as mission control, coordinat everything and keep in communication with the spacecraft.