3 years ago

How do astronomers use parallax to calculate a stars distance?

2 answers:

8 0

Astronomers can measure a star's position once, and then again 6 months later and calculate the apparent change in position. The star's apparent motion is called stellar parallax. The distance d is measured in parsecs and the parallax angle p is measured in arc seconds.

Sav [38]3 years ago

8 0

Astronomers use an Astrolabe

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