The angle between two lines of sight to an object’s edges; distinct from its actual diameter in kilometers.
Why Does the Moon Look Larger at the Horizon?Source cited by the articleWords that help us understand
All conceptsAngular Size
Meanings in context, with links to the articles and sources in which they appear.
An object’s extent in the visual field measured as an angle, distinct from physical size; explains the difference between a planetary disk and a near-point stellar source.
Why Do Stars Twinkle?Source cited by the article