which of the statements below is true?

Question

a) the stars in a galaxy are held together by gravity
b) Stars in a galaxy slowly rotate around a center
c) The Milky Way is the only galaxy in the universe
d)All of the above

just need to know if my answer is correct or wrong d

Answer 1

Since c) is wrong, d) can't be right.

http://en.wikipedia.org/wiki/Galaxy

Answer 2

a ms sue

Answer 3

Right.

Answer 4

thanks

Answer 5

b is also true, for most stars anyway.

If they did not rotate about the center, they would all collapse there.

Some have already; that's why there is a black hole at the center.

Answer 6

Great job students!