Question

what is difference between parallax and parsec?
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Answer 1

Answer:

Specifically, in the case of astronomy it refers to the apparent displacement of a nearby star as seen from an observer on Earth. Where p is the parallax angle observed, and D is the actual distance measured in parsecs. A parsec is defined as the distance at which an object has a parallax of 1 arcsecond.

Answer 2

Answer:

The star's apparent motion is called stellar parallax. The distance d is measured in parsecs and the parallax angle p is measured in arcseconds. This simple relationship is why many astronomers prefer to measure distances in parsecs.

Explanation:

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