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Biology 7 Online
OpenStudy (anonymous):

What is the name for galaxies held together by gravity? A. solar system B. constellation C. binary system D. cluster @petiteme

OpenStudy (anonymous):

I would think D.. I'm not sure though. :(

OpenStudy (petiteme):

That's what I thought too. Not sure though :o

OpenStudy (petiteme):

"Clusters appear to be collections of galaxies held together by mutual gravitational attraction."

OpenStudy (anonymous):

Ah so it is D. :o

OpenStudy (petiteme):

Hahahaha we therefore conclude, it is D! xD

OpenStudy (anonymous):

Thank you so much for your help! xD You earned a fan! :)

OpenStudy (petiteme):

Thank you!

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