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    kae5's Avatar
    kae5 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 26, 2007, 10:14 AM
    Emission nebulas
    What ingredients are needed to cause an emission nebula?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #2

    Dec 4, 2007, 05:25 PM
    Like baking a cake or..

    What do you mean by "ingredients"?
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