How can the milky way can be divided into regions of seperate ages?

Subject: How can the milky way can be divided into regions of seperate ages?

Date: Mon Sep 25 21:38:14 2000
Posted by Mary
Grade level: 10-12 School: highschool
City: wellington State/Province: doesn't exist Country: New Zealand
Area of science: Astronomy
ID: 969932294.As

Message:


I heard this at a lecture I was at, and was curious at how this is 
possible, and if so, to what catagories do we divide them into, is this the 
same with other galaxies?

Re: How can the milky way can be divided into regions of seperate ages?

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