The investigation of the nature of the universe through observation and analysis of the resulting data. Astronomy has many specialized areas of study including planetary studies, astrometry, stellar structure and evolution, interstellar matter and conditions, galactic structure, high-energy sources, and cosmology. The Astronomer can also specialize in a particular band of the electromagnetic spectrum, such as optical or radio astronomy, or in new observational tools such as neutrino and gravity wave detectors. The astronomer will be familiar with the moons, planets, prominent stars, and many nebulous sources. He will also be able to compute the orbits of comets and other bodies, and will be aware of upcoming significant astronomical events.