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.
In the center of the Orion Nebula are four monstrously massive stars called the Trapezium, which are about 100,000 times as luminous as the Sun. The heat and wind from these stars is making a cavity in the surrounding cloud, by blasting gas and dust away.