Question

How is distance to a star calculated?

Answer 1

A couple of different ways, depending on the level of accuracy you're looking for. Observing the redshift of its galaxy and then using Hubble's law, or using optical parallax, or determining its size by other means and then calculating its distance by measuring its brightness are all possibilities.

Answer 2

Mostly by the amount of doppler redshift. Sometimes the starlight undergoes some absorption on its path (dust, u know is everywhere) , if we know the amount of absorption per distance - it is an additional clue

Answer 3

Nearby stars are measured with parallax

Answer 4

@apple_pi

Answer 5

what can you say about @mathslover

Answer 6

as mentioned by mayank ... we can measure the nearby stars as :