A star system where we observe the magnitude to increase and ...

[mia]

A star system where we observe the magnitude to increase and decrease is a(n) ________.
 
  Fill in the blank(s) with correct word

Question 2

The Galactic Year is the time for our solar system to orbit the Galaxy; it is about
 
  A) 15 million years.
  B) 225 million years.
  C) 4.5 billion years.
  D) 9.6 billion years.
  E) 13.5 billion years.

[LegendaryAnswers]

Answer to Question 1

eclipsing binary

Answer to Question 2

B

[mia]

Excellent

[31809pancho]

Thanks for the timely response, appreciate it