7
AssignmentMultiple Choice

Lesson 6.3 Origin and Evolution of the Universe

Question 7 • (OC27) Earth/Space Sci-2001310-S2-Nelson

Isabela is an astronomer studying stars A and B. Star A is farther away from Isabela and yet when Isabela observes the stars, the stars appear to have the same brightness.Which would be the best explanation for this?

Answer
A
The stars have the same luminosity.
B
Star A is more luminous than star B.
C
Star B is more luminous than star A.