Xylocaine (lidocaine) MPF is a sterile, nonpyrogenic, isotonic solution containing sodium chloride. Xylocaine (lidocaine) in multiple dose vials: Each mL also contains 1 mg methylparaben as antiseptic preservative.
The Bureau of Labor Statistics reports that there were about 1,240 astronomers in the U.S. in 2009. They earned a national average of about $49 per hour, or about $102,740 per year.
What tools do astronomers use and what do these tools do? The main tools used by astronomers are telescopes, spectrographs, spacecrafts, cameras, and computers. Astronomers use many different types of telescopes to observe objects in the Universe. Some are located right here on earth and some are sent into space. Just about everything we know about the Universe comes from the study of the light emitted by objects in space. Astronomers use these tools (especially telescopes) very often. Astronomers also use a lot of physics and mathematics in their work.