Question

Which data provide the best evidence of supermassive black holes at the centers of galaxies?
A.
sonar observations of the black hole
B.
observations of infrared radiation coming from the black hole
C.
observations of visible light coming from the black hole
D.
X-ray observations of superheated gas around the black hole

Answer 1

Answer:B

Explanation:

Answer 2

A black hole is a region of space where the gravity is o strong that even the light rays are unable to escape through it.

• The most direct evidence of the supermassive black hole is the orbital motion of the stars around the center of the milky way. The supermassive black hole is about three million times of solar mases.

• Black holes emit X rays from a corona of energy of energetic particles some of them reaches the observers directly. Hence the option D is correct.

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