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

Apophis’s brush with Earth will also be potentially visible as a fast-moving point of light to the vast majority of people on Earth, said cartographer Michael Zeiler and astronomer Richard Fienberg at the June workshop. — Andrew Jones, Scientific American, 30 July 2026

The study of Saturn's rings has allowed astronomers to see the raw materials of the early solar system. — Tariq Malik, Space.com, 30 July 2026

Astronomers plan to observe impact While your backyard telescope won't be a lot of help in spotting the impact, professional astronomers have much more powerful equipment at their disposal to observe and crash. — Eric Lagatta, USA Today, 30 July 2026

Not a bright idea For his study, Hainaut, who has worked as an astronomer for ESO for over 30 years, set out to simulate the locations, motion, and brightness of all existing and planned satellite constellations. — Chris Young july 28, Refractor, 28 July 2026

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