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Author Question: Why do astronomers believe that there is a large black hole, around 4 million times the mass of our ... (Read 47 times)

Themember4

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on: Jul 27, 2018
Why do astronomers believe that there is a large black hole, around 4 million times the mass of our Sun, in the Galactic center?
 
  What will be an ideal response?

Question 2

All the following statements are true. Which one follows directly from Kepler's third law (p2 = a3)?
 
  A) Venus orbits the Sun at a slower average speed than Mercury.
  B) Venus is more massive than Mercury.
  C) Venus takes longer to rotate than it does to orbit the Sun.
  D) Venus has a thicker atmosphere than Mercury.


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jonathanballen97

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Reply #1 on: Jul 27, 2018
Answer to Question 1

Observations of the Galactic center show a large amount of energy being produced. Radio observations show a ring of gas with a high rotation speed around the center, showing a very large mass. The structure seen in higher resolution radio observations is peculiar. These observations are consistent with an accretion disk around a supermassive black hole.

Answer to Question 2

A


Themember4

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Reply 2 on: Jul 27, 2018
Excellent

smrtceo

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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