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Now choose which theory best fits

Now that you have seen animations depicting each theory and real data, choose the theory that best fits the evidence.

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Spherical
Infall

artist's impression of the spherical inflow model
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Disk &
Outflow

artist's impression of te spherical inflow model
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Collisions


image of Constellation Orion

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This material is based upon work supported by the National Science Foundation under Grant No. (NSF AST 0507478). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.