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.
At the center is a pulsar (the remnant of the original star). This represents the death stage of a star's life (even though there is a pulsar left behind). The Orion Nebula is a cloud of dust and gas that is a star forming region. It is home to many protostars, and thus represents the early stages of stellar life. The Ring Nebula is a planetary nebula, which occurs as a red giant cools, throws off its outer shell and becomes a white dwarf.