If the distance to the nearest star is 4.2 light years,what can we conclude about the star?
A)The star is 4.2 million AU away.
B)The star's light takes 4.2 years to reach us.
C)The star must have formed 4.2 billion years ago.
D)The star must be very young.

Question

Quizplus · Accepted Answer

The statement "the distance to the nearest star is 4.2 light years" means that it takes 4.2 years for the light from the star to reach us. Therefore, choice B is correct. Choice A is incorrect because the distance is measured in light years, not AU (astronomical units). Choice C is not necessarily true, as the star's age cannot be inferred from its distance alone. Choice D is not necessarily true either, as the star could be young or old.

If the Distance to the Nearest Star Is 4