EGG HARBOR TOWNSHIP â The dogs â and people â who visit the dog park on Swift Avenue will have more to enjoy, thanks to a group of third-graders and a $500 grant from the Egg Harbor Township Education Foundation. Read more
Galactic Disk-A disk of matter, about 30 kiloparsec s (kpc) in diameter and 2 kiloparsec s thick, containing most of the stars and interstellar matter in the Milky Way ... galactic disk Flattened region of gas and dust that bisects the galactic halo in a spiral galaxy. This is the region of active star formation.
Either way, spiral arms contain many young, blue stars (due to the high mass density and the high rate of star formation), which make the arms so bright. Galactic bulge. A bulge is a huge, tightly packed group of stars. The term commonly refers to the central group of stars found in most spiral galaxies. Using the Hubble classification, the bulge of Sa galaxies is usually composed of Population II stars, that are old, red stars with low metal content.