Some stars are variable, with many properties that change over time. The statement that the apparent magnitude of a variable star has INCREASED indicates that its
A) brightness has increased.
B) surface temperature has decreased.
C) brightness has decreased.
D) surface temperature has increased.

Question

Quizplus · Accepted Answer

In astronomy, an increase in the apparent magnitude of a star means that it appears dimmer from our perspective on Earth, because the magnitude scale is inverse, where lower numbers indicate brighter objects and higher numbers indicate dimmer objects.

Some Stars Are Variable, with Many Properties That Change Over