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.
Because we live within it, the Galactic disk of our own Milky Way Galaxy appears as a broad band of light across the skythe Milky Way. Near the center, the Galactic disk thickens into the Galactic bulge. The disk is surrounded by a roughly spherical Galactic halo of old stars and star clusters.Our Galaxy, like many others visible in the sky, is a spiral galaxy. The halo can be studied using variable stars, whose luminosity changes with time.Pulsating variable stars vary in brightness in a repetitive and predictable way. Two types of pulsating variable stars of great importance to astronomers are RR Lyrae variables and Cepheid variables.ecause we live within it, the Galactic disk of our own Milky Way Galaxy appears as a broad band of light across the skythe Milky Way. Near the center, the Galactic disk thickens into the Galactic bulge. The disk is surrounded by a roughly spherical Galactic halo of old stars and star clusters.