The center of our galaxy is believed to be occupied by the radio ...

[joblessjake]

The center of our galaxy is believed to be occupied by the radio source known as ___________________ _.
 
  Fill in the blank(s) with correct word

Question 2

What is the lifetime on the main sequence of a 2-solar-mass star compared to the approximately 10-billion-year life of our Sun? Pick the best answer.
 
  a. 1.8  1011 years
  b. 1.8  1010 years
  c. 1.8  108 years
  d. 1.8  106 years
  e. 1.8  103 years

[AaaA]

Answer to Question 1

Sgr A
Sagittarius A

Answer to Question 2

c

[joblessjake]

YES! Correct, THANKS for helping me on my review

[Dnite]

Excellent