The center of the Milky Way galaxy must be less than 1 AU in ...

[nevelica]

The center of the Milky Way galaxy must be less than 1 AU in diameter and contain at least 4 million solar masses. Therefore, the center of the Milky Way galaxy must be a ___________________ _,
 
  Fill in the blank(s) with correct word

Question 2

What characteristic of a star primarily determines its location on the main sequence?
 
  a. age
  b. distance from the galactic center
  c. mass
  d. space motion
  e. radius

[scottmt]

Answer to Question 1

supermassive black hole

Answer to Question 2

c

[nevelica]

Thanks for the timely response, appreciate it

[Dinolord]

Gracias!