Author Question: Which of the following observations confirms that Sgr A at the center of our galaxy is indeed a ... (Read 55 times)

809779 · **on:** Jul 27, 2018

Which of the following observations confirms that Sgr A at the center of our galaxy is indeed a supermassive black hole?

A) measurements of radio emission from gas around Sgr A
B) measurements of occasional X-ray emission from Sgr A
C) measurements of the orbits of stars around Sgr A
D) measurements of trans-dimensional space warps in the vicinity of Sgr A

Question 2

The discovery of Charon allowed astronomers to determine Pluto's mass.

Indicate whether the statement is true or false