astronomer

noun

as·​tron·​o·​mer ə-ˈsträ-nə-mər 

: 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

As the extraction of copper and lithium ramps up to meet soaring global demand, astronomers working in the area worry that the Chilean desert’s status as the ‘eyes of the world’ could be in jeopardy. —Cecilia Rodriguez, Forbes, 2 Mar. 2025

In five years time, Hubble or the James Webb Space Telescope will collect more data to produce another image like this; by comparing the two images, astronomers will be able to see how the dwarf galaxies have moved. —Keith Cooper, Space.com, 28 Feb. 2025

To maximize the experience, astronomers recommend finding a dark location away from city lights and dressing warmly. —Jenna Dejong, Newsweek, 28 Feb. 2025

To catch a glimpse of the seven visible planets, astronomers recommend starting to look for them about half an hour after sunset. —Chandelis Duster, NPR, 27 Feb. 2025

Word History

Etymology

Middle English, "one versed in astronomy or astrology," from astronomie astronomy + -er -er entry 2

Note: Alternatively, Oxford English Dictionary, third edition, and Middle English Dictionary see the English word as derived from Medieval and Late Latin astronomus "astronomer" (borrowed from Greek astronómos) plus the agent suffix -er.

First Known Use

14th century, in the meaning defined above

Rhymes for astronomer

• ionomer
• monomer