Requires a bachelor's degree in engineering and 4-6 years of experience in the field or in a related area. Familiar with a variety of the field's concepts, practices, and procedures. Relies on experience and judgment to plan and accomplish goals. Performs a variety of complicated tasks.
The Ring Nebula (also catalogued as Messier 57, M57 or NGC 6720) is a planetary nebula in the northern constellation of Lyra.
Working outward from the planet, the rings are: D, C, B, A, F, G, E. The large division between rings B and A is called the Cassini Division after the astronomer who discovered both the gap and four of Saturn's moons. D, C, B, and A are the major ring groups; F, G, and E are fainter, narrower rings.