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What exactly is a degree in terms of the distance between stars? | Astronomy.com
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FROM THE September 2015 ISSUE

What exactly is a degree in terms of the distance between stars?

Stephanie Johnson, Maple Grove, Minnesota
Published: Monday, July 27, 2015
RELATED TOPICS: THE MOON
Degrees of sky are irrelevant to true distance between stars. If the MoonтАЩs distance from Earth doubled, its apparent size would shrink by half, even though its physical diameter would remain unchanged.
A measurement in degrees has nothing to do with the true distances between celestial objects. When we talk about apparent distances or sizes, how- ever, degrees do come into play.

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