The energy source at the center of our galaxy
A) is not visible at optical wavelengths.
B) produces X-rays.
C) must be less than 10 AU in diameter.
D) all of the above.
E) none of the above.

Question

Quizplus · Accepted Answer

The energy source at the center of our galaxy is not visible at optical wavelengths and produces X-rays, indicating that it is emitting high-energy radiation. It is also believed to be a supermassive black hole, which is typically less than 10 AU in diameter. Therefore, all of the given choices are correct.

The Energy Source at the Center of Our Galaxy