as·​tron·​o·​mer | \ ə-ˈsträ-nə-mər How to pronounce astronomer (audio) \

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 plan is for Astrobites to continue highlighting a different astronomer each day, for Black astronomers tell their stories. Karen Kwon, Scientific American, "Black Astronomers Highlight Achievements and Obstacles," 25 June 2020 Seek expert advice from an astronomer before using a solar filter with a camera, telescope, binoculars or any other optical device; note that solar filters must be attached to the front of any telescope, binoculars, camera lens or other optics. Ashley Strickland, CNN, "Solar eclipse 2020: How and when to watch the June annular eclipse," 19 June 2020 It’s also the first time that the distinct green lights have been seen on a planet beyond Earth, according to Jean-Claude Gérard, an astronomer at the Université de Liège in Belgium and lead author of the study. NBC News, "In the atmosphere of Mars, a green glow offers scientists hints for future visits," 16 June 2020 At the solstice, the sun’s rising and setting positions barely change for more than a week, according to UMass Amherst astronomer Stephen Schneider. USA TODAY, "Silver Dollar City, ‘Thunder’ silenced, empty Vegas buffets: News from around our 50 states," 16 June 2020 In 1995 astronomer Bob Williams had a zany idea: What if NASA pointed Hubble at a seeming dark spot in the sky? National Geographic, "After 30 years, Hubble is still revealing new mysteries of the universe," 23 Apr. 2020 Duncan Lorimer, an astronomer at the University of West Virginia, reported the serendipitous discovery of a cosmological phenomenon known as a fast radio burst (FRB). Popular Science, "Half the matter in the universe was missing. We found it hiding between galaxies.," 31 May 2020 The Very Large Telescope based in Chile has a new and more powerful spectrograph named ESPRESSO, so astronomers decided to use it for more precise measurements of the planet. Ashley Strickland, CNN, "Astronomers confirm Earth-size exoplanet around nearest star and maybe more," 4 June 2020 But with a bit of luck, astronomers could sooner or later evaluate its predictions. Jonathan O'callaghan, Scientific American, "A Hydrogen Iceberg from a Failed Star Might Have Passed through Our Solar System," 3 June 2020

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

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Statistics for astronomer

Last Updated

29 Jun 2020

Cite this Entry

“Astronomer.” Dictionary, Merriam-Webster, Accessed 2 Jul. 2020.

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More Definitions for astronomer


as·​tron·​o·​mer | \ ə-ˈsträ-nə-mər How to pronounce astronomer (audio) \

Kids Definition of astronomer

: a person who is a specialist in astronomy

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More from Merriam-Webster on astronomer

Rhyming Dictionary: Words that rhyme with astronomer

Spanish Central: Translation of astronomer

Nglish: Translation of astronomer for Spanish Speakers

Britannica English: Translation of astronomer for Arabic Speakers

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