Galaxies Crossword Puzzle

QUESTIONS LIST: brightest : spiral galaxies are usually the _ , gravity : the force holding a galaxy together, young : a spiral galaxy contains both _ and old stars, elliptical : this galaxy has very little gas and dust, elliptical : this galaxy is made up of mainly old stars, amount : spiral and irregular galaxies are similar in the _ of gas and dust they contain, irregular : this galaxy may or may not have a disk and/or bulge in the middle, elliptical : a round/oval shaped galaxy, irregular : a galaxy without any symmetrical or definite shape, spiral : a pinwheel shaped galaxy, universe : all matter and energy, including all the galaxies and the space between them, rich : our galaxy, the milky way, is _ in gas and dust, galaxy : a large group of stars, gas and dust held together by gravity.