The center of the galaxy has been studied extensively using visible light.

The center of the galaxy has been studied extensively using visible light.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 2

According to Aristotle, an object with no forces acting on it will ____.
 
  a. move faster and faster
 b. eventually stop moving
 c. move at a constant speed forever
 d. first increase and then decrease in speed
  e. first decrease and then increase in speed

Question 3

A grand-design galaxy contains clear spiral arms with few spurs.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 4

Special relativity states the relationship between energy and mass as .
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 5

O and B stars are important spiral tracers.
 
  a. True
  b. False
  Indicate whether the statement is true or false

Question 6

The second postulate of special relativity states that the speed of light, when measured in a vacuum, is constant for all observers.
 
  a. True
  b. False
  Indicate whether the statement is true or false