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www.reference.com/article/astronomers-4368ff108c943095

Astronomers study light waves collected from outer space to understand how the universe works. Because only a narrow band of light waves is visible to the human eye, they use telescopes and light-collecting antennae to collect, amplify and observe light that could not otherwise be perceived.

www.reference.com/article/astronomers-work-6de41e9520559ad3

Jobs for astronomers are located around the world, with the majority of opportunities held at universities and research facilities. The industry tends to be highly competitive, with about 150 job openings in North America each year.

www.reference.com/article/definition-astronomical-unit-194fde8bbeec25e8

An astronomical unit is equal to 92.96 million miles or the mean distance between Earth and the sun. The International Astronomical Union refined the definition for this unit in 2012, making it a standard international value.

www.reference.com/article/astronomer-study-58a4c976149ec96e

Astronomers use physics, chemistry and mathematics to study the makeup of the universe. They discover facts about other astrophysical objects using telescopes on Earth and in space, radio, computers and the geology of Earth. Astronomers also use digital cameras and charge-couple devices in order to

www.reference.com/article/measure-astronomical-distances-light-years-astronomical-units-994744d9ccc3c2c2

An astronomical unit, or AU, and a light-year are two separate measurements that are used for different distances in space. According to the University of Nebraska, an AU is the smallest distance used to measure distances in space, and the light year is the standard measurement for interstellar dist

www.reference.com/article/astronomers-use-light-years-measure-distances-space-494a46632e6307e2

Astronomers use light years to measure distances in space because space is so massive and distances so far that conventional numbering is inadequate and unmanageable. One light year is a distance measurement equivalent to six trillion miles.

www.reference.com/article/did-astronomers-suspect-planet-beyond-uranus-d48d4fc6eba37bd3

Astronomers suspected another planet beyond Uranus when it was noted that Uranus was being slightly pulled out of orbit at points. This led to speculation that gravity from another planet was causing the pull.

www.reference.com/article/shoemaker-levy-9-impact-important-astronomers-59ef85cbe7c0b4dd

The 1994 impact of comet Shoemaker-Levy 9 on Jupiter was important to scientists for two main reasons. First, the force of the impact drove material from deep within Jupiter to its visible surface, giving chemists and meteorologists an unprecedented look at the planet's chemistry. Second, the impact

work.chron.com/astronomers-job-environment-25006.html

What Is an Astronomer's Job Environment?. Astronomers study the universe -- the stars, planets and galaxies that exist beyond Earth. Often highly educated, most astronomers require a doctorate to qualify for jobs, as this is a select group of scientists. The Bureau of Labor Statistics reports that 2

www.thoughtco.com/important-astronomers-4133554

Sometimes understanding the people behind the science is just as important as knowing its principles. Learn about the men and women who have made a difference in the world of astronomy and space exploration, from ancient astronomers to astronauts in training. Sometimes understanding the people behin