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Old 12-01-2020, 10:24 AM   #6
Fred Brackin
 
Join Date: Aug 2007
Default Re: [Space] The Benefit Of Building A Single Big System

Quote:
Originally Posted by AlexanderHowl View Post
Even if only 50% of them have planetary systems and only 20% of those planetary have habitable planets, that is still one million stars orbited by habitable planets.
Habitable for creatures that float in the atmospheres of gas giants maybe. Even te clusters that show 2 generations of star formation have those being brief periods of star formation and being long ago.

So the stars that have survied in globular cluters are small and old and not at all likely to have rocky planets.

By contrast stars in open clusters are young and recently formed. Very likely too young. I read a blurb a year or two ago about a team that thought they had found the first known star that formed in the same cluster as our Sun and it was hundreds of ly away.
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