Dennis Dean McCarthy

Title: Retired Astronomer, Research Scientist, Scientist
Company: U.S. Naval Observatory
Location: Vienna, Virginia, United States

Dennis Dean McCarthy, PhD, Retired Astronomer, Research Scientist, and Scientist at the U.S. Naval Laboratory, has been recognized by Marquis Who’s Who Top Scientists for dedication, achievements, and leadership in astronomy.

During his junior year of high school, Dr. McCarthy was set on completing the task of building a traditional telescope. He enjoyed the project so much that he developed a life-long love of astronomy and in 1964, he graduated from the Case Institute of Technology with a Bachelor of Science in astronomy. In the following years, he attended the University of Virginia in which he earned a Master of Science and a Doctor of Philosophy, both in astronomy.

In 1965, Dr. McCarthy was hired as an astronomer at the U.S. Naval Observatory. He remained in that role until 1975, which is when he was promoted to become the project leader on the Photographic Zenith Tube. As he gained more experience in his field, he took on a multitude of different roles. From 1979 until 1982, he acted as the head of the astronomical time and polar motion section of the observatory. Later, until 1996, Dr. McCarthy held the title of director directorate of time. He retired in 2015 after successfully serving the U.S. Naval Observatory in myriad positions, the last of which was the director of time.

Outside of his primary endeavors, Dr. McCarthy found success as an editor for, “Time and the Earth’s Rotation” and “Variation in Earth’s Rotation.” Further, he contributed numerous articles to the Astronomical Journal, the Journal of Geophysical Research and Astronomy and Astrophysics. He additionally maintains affiliation with the American Astronomical Society, the American Geophysical Union and the International Astronomical Union. In 1983, in light of his professional accomplishments, Dr. McCarthy was awarded the Simon Newcomb Award from the U.S. Naval Observatory.

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