1. What is NASA's mission ? What are NASA^ prime s four mission directorates?

NASA's mission and NASA's prime four mission directorates is explained below in complete detail.

Explanation:

NASA's Science Mission Directorate advocates, produce, and researches in and from space in the developments of Earth science and relationships, heliophysics (i.e., cosmic and space physics), scientific investigation of the planetoids, and other solar arrangement forms, and astrophysics and astronomy.

Science Mission Directorate coordinates its operation to accomplish the goals through four sections: Heliophysics, Planetary Science, Earth Science, and Astrophysics.