Answers

2015-06-26T18:39:36+05:30
A galaxy is a gravutational bound of stars, stellars, remnants,intersteller ,dust & dark matter the word galaxy is derived from greek galaxias

0
2015-06-29T22:44:35+05:30
A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas and dust, and dark matter. 
0