Search found 2 matches

by John Storey
Tue Sep 14, 2010 10:14 am
Forum: High School Physics
Topic: open and globular clusters
Replies: 1
Views: 13480

Re: open and globular clusters

Open clusters are made up of typically 10 - 100 young stars that formed more or less together and have not yet had time to drift apart. By the time they have grown old, they will no longer necessarily be in the same part of the sky. Globular clusters are gravitationally bound associations of typical...
by John Storey
Tue Sep 14, 2010 10:06 am
Forum: High School Physics
Topic: astrophysics - CNO cycle
Replies: 1
Views: 13487

Re: astrophysics - CNO cycle

So where is the carbon, nitrogen and oxygen coming from? Good question! The process can only occur in stars that contain material from a previous generation of stars; stars that produced some of these heavier elements and then seeded the interstellar medium with them - either through mass loss or be...