If suddenly we find that the distance between Earth and the Sun is now 10 percent larger than we thought it was before,what else will change?
A) the distances of stars
B) the size of our galaxy
C) the value of H0
D) all of the above

Question

Quizplus · Accepted Answer

The distance of stars is measured using parallax which relies on knowing the distance to the Sun accurately. If the distance to the Sun is larger than we thought, then the distances of stars will also need to be adjusted. The value of H0 (the Hubble constant) is calculated using distance measurements, so a change in the distance to the Sun will also affect the value of H0. The size of our galaxy may also be affected since our position in the galaxy is determined by the Sun's distance from the center of the galaxy.

If Suddenly We Find That the Distance Between Earth and the Sun