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.
Ring Nebula. The Ring Nebula (M 57) is a planetary nebula about 2300 light years away from us. This is how it looks when a star blows its outer layers at the end of the life. If the star is not big enough to explode in a supernova, it will eject some of its mass as in the case of M 57, the Ring Nebula. The star in the centre of the nebula can still be seen, but it is passing through the last stage of its stellar evolution and is soon to become a white dwarf.