Why is the parallax method not used to measur | vedclass

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(B) The parallax method relies on measuring the angle subtended by the distance between two points on Earth's orbit at the star. As the distance to th

Vedclass · Accepted Answer

The parallax angle is too small to be measured accurately.

Vedclass · Answer

(B) The parallax method relies on measuring the angle subtended by the distance between two points on Earth's orbit at the star. As the distance to the star increases,the parallax angle decreases. For stars at a distance of $100$ light-years,the parallax angle is extremely small (less than $0.033$ arcseconds),making it practically impossible to measure with sufficient accuracy using current optical instruments.

Why is the parallax method not used to measure the distance of stars that are $100$ light-years away?

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