by Andrew Bushmill » Fri Dec 03, 2004 9:38 pm
Today's APOD of I Zwicky 18 mentions that this galaxy is only 3000 ly across. Makes me wonder: How is it different in essence from a large open cluster?
Today's APOD of I Zwicky 18 mentions that this galaxy is only 3000 ly across. Makes me wonder: How is it different in essence from a large open cluster?