Merri Sue Carter (born 1964) is an American astronomer who works at the

United States Naval Observatory United States Naval Observatory (USNO) is a scientific and military facility that produces geopositioning, navigation and timekeeping data for the United States Navy and the United States Department of Defense. Established in 1830 as the Depo ...

as director of the World Data Center for the Rotation of the Earth, Washington. She is also the author of books on the

history of astronomy Astronomy is the oldest of the natural sciences, dating back to antiquity, with its origins in the religious, mythological, cosmological, calendrical, and astrological beliefs and practices of prehistory: vestiges of these are still found in ...

with her father, geodesist William E. Carter.

Education and career

Carter was born on November 16, 1964, in

Columbus, Ohio Columbus () is the state capital and the most populous city in the U.S. state of Ohio. With a 2020 census population of 905,748, it is the 14th-most populous city in the U.S., the second-most populous city in the Midwest, after Chicago, and t ...

, where her father, William E. Carter, was studying

geodesy Geodesy ( ) is the Earth science of accurately measuring and understanding Earth's figure (geometric shape and size), orientation in space, and gravity. The field also incorporates studies of how these properties change over time and equivale ...

Ohio State University The Ohio State University, commonly called Ohio State or OSU, is a public land-grant research university in Columbus, Ohio. A member of the University System of Ohio, it has been ranked by major institutional rankings among the best publ ...

. He became a research geodesist for the

United States Air Force The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Signal ...

, the

University of Hawaii A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, th ...

, and the

National Oceanic and Atmospheric Administration The National Oceanic and Atmospheric Administration (abbreviated as NOAA ) is an United States scientific and regulatory agency within the United States Department of Commerce that forecasts weather, monitors oceanic and atmospheric conditio ...

, and the family moved frequently as Carter was growing up. She graduated from

University of Maryland, College Park The University of Maryland, College Park (University of Maryland, UMD, or simply Maryland) is a public land-grant research university in College Park, Maryland. Founded in 1856, UMD is the flagship institution of the University System of Mary ...

in 1986, and earned a master's degree in 1999 through

University of Maryland University College The University of Maryland Global Campus (UMGC, formerly University of Maryland University College) is a public university in Adelphi, Maryland. It is the largest of the University System of Maryland campuses. Established in 1947, UMGC focuses on ...

. She has been an astronomer at the United States Naval Observatory since 1986. There, she directs the World Data Center for the Rotation of the Earth, Washington, which coordinates data for the

International Earth Rotation and Reference Systems Service The International Earth Rotation and Reference Systems Service (IERS), formerly the International Earth Rotation Service, is the body responsible for maintaining global time and reference frame standards, notably through its Earth Orientation Pa ...

Books

With her father, Carter is the author of: *''Latitude: How American Astronomers Solved the Mystery of Variation'' (Naval Institute Press, 2002), on the

Chandler wobble The Chandler wobble or Chandler variation of latitude is a small deviation in the Earth's axis of rotation relative to the solid earth, which was discovered by and named after American astronomer Seth Carlo Chandler in 1891. It amounts to change o ...

*''Simon Newcomb: America's Unofficial Astronomer Royal'' (Mantanzas Publishing, 2006), a biography of

Simon Newcomb Simon Newcomb (March 12, 1835 – July 11, 1909) was a Canadian–American astronomer, applied mathematician, and autodidactic polymath. He served as Professor of Mathematics in the United States Navy and at Johns Hopkins University. Born in Nov ...

References

{{DEFAULTSORT:Carter, Merri Sue 1964 births Living people 20th-century American astronomers American women astronomers Historians of astronomy University of Maryland, College Park alumni University of Maryland Global Campus alumni 20th-century American women scientists 21st-century American astronomers 21st-century American women scientists People from Columbus, Ohio Scientists from Ohio