Question

Which of these is most likely to happen if parallax measurements of star distances are taken after a gap of six months? The results would be accurate the results would be inconsistent the results would not be valid the results would not be repeated

Answer 1

Option A, The results would be accurate

Step-by-step explanation:

The distance between two stars is measured using the trigonometric parallax method in which the brightness of stars is used as a distance measurement parameter.

Parallax method is used when the stars are very near. The parallax will produce inconsistent result only when the stars are moving at a very rapid speed in diverse direction. Since this is not happening in this case, thus, accurate results will be obtained even after six month

Option A, is correct

Answer 2

The correct answer is: The results would be accurate.

Parallax measurement is used to measure distances to nearby stars. It is based on the observation from different points of view. The object is displaced because of a change in the observer's point of view. So, astronomers can measure a star's position once, and then again 6 months later and calculate the apparent change in position.