astrometry
noun
as·trom·e·try
| \ ə-ˈsträ-mə-trē
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Definition of astrometry
: a branch of astronomy that deals with measurements (as of positions and movements) of celestial bodies
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Other Words from astrometry
astrometric
\ ˌas-trə-ˈme-trik
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adjective
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adjective
Examples of astrometry in a Sentence
Recent Examples on the Web
Breakthrough Watch is also pursuing a separate mission called TOLIBOY, tentatively set for a 2021 launch, which would search for planets by precisely mapping the motions of Alpha Centauri A and B using a technique called astrometry. — Corey S. Powell, Scientific American, "The Hunt Is on for Alpha Centauri’s Planets," 5 Aug. 2019 Byrd explains that Gaia studies the motions of individual stars using a technique called astrometry. — Jason Daley, Smithsonian, "2.8 Million Stars Sparkle in This Incredible Image of the Milky Way," 6 Sep. 2017 Measuring these shifts, or parallaxes, lets astronomers calculate the stars’ actual positions and movements through the galaxy with great precision, a field of study called astrometry that Gaia and its predecessor Hipparcos have revitalized. — Michael Greshko, National Geographic, "New Milky Way Map Is a Spectacular Billion-Star Atlas," 14 Sep. 2016These example sentences are selected automatically from various online news sources to reflect current usage of the word 'astrometry.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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