What can be the maximum distance of star which can be measured by using parallax method ?

Assertion: Very large distances such as distance of a planet or star can be measured by parallax method. Reason: For measuring small masses of atomic/ sub-atomic particles, mass spectrograph is used.

Why distances of only nearby stars can be found only by parallax method ?

Give the range of distance that can be measured.

(A): The distance of a star from earth can be measured by parallax method. (R): The change in position of an object due to change in the point of observation is called parallax.

The range of distance can be measured by the direct method is………….