# astronomy

> English word · Noun · IPA /əˈstɹɑn.ə.mi/ · frequency rank #12,367

## Definitions
1. The study of the physical universe beyond the Earth's atmosphere, including the process of mapping locations and properties of the matter and radiation in the universe.
2. Astrology.

## Etymology
From Middle English astronomie, astronemy, from Old French astronomie, equivalent to astro- + -nomy. Displaced native Old English tungolcræft.

## Easily confused with
- **autonomy** (https://plainspell.com/en/vs/astronomy-vs-autonomy)
- **astrology** (https://plainspell.com/en/vs/astrology-vs-astronomy)
- **astronomer** (https://plainspell.com/en/vs/astronomer-vs-astronomy)

## Common misspellings (14)
`asrtonomy`, `asstronomy`, `astornomy`, `astrnoomy`, `astronmoy`, `astronnomy`, `astronommy`, `astronomyy`, `astronoym`, `astroonmy`, `astrronomy`, `asttronomy`, `atsronomy`, `satronomy`

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/astronomy