as·tron·o·mer | \ə-ˈsträ-nə-mər \

Definition of astronomer 

: a person who is skilled in astronomy or who makes observations of celestial phenomena

Examples of astronomer in a Sentence

Recent Examples on the Web

The astronomers and astrophysicists documented their work in a pair of research papers published in Science on Thursday. Robert Lee Hotz, WSJ, "Scientists Track Neutrinos Through Ice to Their Source in the Cosmos," 12 July 2018 The inherent elusiveness of neutrinos has prevented astronomers from pinning down the origin of such cosmic wanderers — until now. Mike Wall, NBC News, "High-energy 'ghost particle' traced to distant galaxy in astronomy breakthrough," 12 July 2018 Extras also include free yoga, lawn games, mountain bikes, nightly social hour and a nighttime program of stargazing with a local astronomer — complete with s'mores. Mary Forgione,, "Save with low-season deal at Arizona boutique hotel in Sedona's Oak Creek Canyon," 29 May 2018 This is just an observer effect, however; pulsars blast out radiation continuously, from their poles, but astronomers' instruments pick these beams up only when they're directed at Earth. Mike Wall, NBC News, "Einstein's theory of relativity passes its toughest test yet," 5 July 2018 Around the denser filament there appear to be striations in the gas that astronomers suspected might be caused by waves propagating through the cloud. Daniel Clery, Science | AAAS, "Scientists just 3D imaged the birthplace of stars—using sound," 10 May 2018 The astronomers' insight is that a rotating, mountainous planet presents a changing silhouette during transit, causing measurements of the dip in light to fluctuate. Bob Henderson, Scientific American, "Exoplanet Everests May Be Detectable When Giant Telescopes Come Online," 1 May 2018 Blazars are exceptionally bright, astronomers believe, because their jets happen to be aimed straight at Earth. Daniel Clery, Science | AAAS, "Ghostly particle caught in polar ice ushers in new way to look at the universe," 12 July 2018 The idea that the cosmos is an active promoter of life dates back to the Greek astronomer Aristarchus of Samos, who lived in the 3rd century BC. Jamie Seidel, Fox News, "Wild new alien theory emerges," 28 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'astronomer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of astronomer

14th century, in the meaning defined above

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Last Updated

12 Oct 2018

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The first known use of astronomer was in the 14th century

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as·tron·o·mer | \ə-ˈsträ-nə-mər \

Kids Definition of astronomer

: a person who is a specialist in astronomy

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a state of commotion or excitement

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