Question

In one or two paragraphs discuss about the real importance of parallax in the aspect of measuring the distance to a star. (Astronomy)

Answer 1

Distances of stars cannot be measured obviously by a tape or even by sneding radiations like lasers or radio waves as they take year to just reach the nearest stars. Further, sars are glowing balls of hot gases and have no solid surface to reflect. A populat technique adopted to measure large distances is called Parallex.

Parallax is the change in the position of an object with respect ti its background, when the object is seen from two different positions. Parallax method is useful to meaure maximum distance of 100 pc or 326 light year.