Requires a bachelor's degree in engineering and 2-5 years of experience in the field or in a related area. Familiar with standard concepts, practices, and procedures within a particular field. Relies on experience and judgment to plan and accomplish goals. Performs a variety of tasks.
The Ring Nebula is about 2,000 light-years from Earth and measures roughly 1 light-year across. Located in the constellation Lyra, the nebula is a popular target for amateur astronomers. Previous observations by several telescopes had detected the gaseous material in the ring's central region. But the new view by Hubble's sharp-eyed Wide Field Camera 3 shows the nebula's structure in more detail.
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.