The Milky Way Crossword Puzzle

QUESTIONS LIST: galaxies : immense star systems held together by mutual gravity of its member stars, reflection : nebula that contains dust which scatters light enough to become visible, core : the section of our galaxy may contain a black hole, dark : nebula that has dust clouds blocking out light of other stars, open : clusters that only have a few hundred stars and are loosely clumped together, barred spiral : galaxy with arms winding out of bars, emission : nebula that contains interstellar gas near young stars that glows, milky way : band of light made up of millions of stars that we see in the night sky, globular : densely clumped cluster that has the oldest stars, spiral : disk with arms winding from the center, population ii : older stars that occur in halos of a galaxy and move along elongated orbits, elliptical : galaxy with no arms and smooth distribution of stars, irregular : galaxy with no obvious structure, population i : you stars that tend to have circular orbits, charles messier : accidentally discovered the first galaxies