Which of the following is smallest?
A)1 AU
B)size of a typical planet
C)1 light- second
D)size of a typical star

Question

Quizplus · Accepted Answer

The size of a typical planet is smaller than 1 Astronomical Unit (AU), 1 light-second, and the size of a typical star. An AU is the average distance from the Earth to the Sun, about 150 million kilometers, and a light-second is the distance light travels in one second, about 300,000 kilometers. Stars and the distances between celestial objects are generally much larger than the size of planets.

Which of the Following Is Smallest