Which of the following statements is an explanation, not an observation?
A)Stars shine with energy generated by nuclear fusion in their cores.
B)More distant galaxies are moving away from us faster than nearby galaxies.
C)Stars can shine brightly for millions of years.
D)All planets orbit the Sun in the same direction and in nearly the same plane.

Question

Quizplus · Accepted Answer

"Stars shine with energy generated by nuclear fusion in their cores" is an explanation of why stars shine, rather than simply an observation of their brightness or behavior.

Which of the Following Statements Is an Explanation, Not an Observation