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.
The rotation curve is a plot of the orbital velocity of the clouds around the galactic center vs. their distance from the Galaxy center. The term rotation in this context refers to the motion of the galactic disk as a whole---the disk made of stars and gas clouds appears to spin.