Which of these is NOT a common misconception
A)A light year is a unit of time.
B)Stars look like disks when seen through a telescope
C)A galaxy is a star plus its planets.
D)All of the other choices are misconceptions.

Question

Quizplus · Accepted Answer

A light year is actually a unit of distance, not time, measuring how far light travels in one year. Stars, when observed through telescopes, do not appear as disks but rather as points of light due to their immense distance from Earth, making it impossible to resolve their shape with most telescopes. A galaxy is not a single star and its planets but rather a massive system composed of billions of stars, their planetary systems, gas, and dust, all bound together by gravity. Therefore, the statement that all of the other choices are misconceptions is correct.

Which of These Is NOT a Common Misconception