Question: How many different groups of stars are there?

Nick Wright answered on 11 Mar 2014:

Interesting question! If you mean star clusters there are lots of them in our galaxy, maybe thousands across our galaxy. Most of them are very young because we often see stars forming in groups, but some can survive for a very long time, such as groups called “globular clusters” that contain millions of stars. They are very pretty and worth looking at through a telescope if you ever get the chance!