The initial stage of star formation is a free-fall collapse. This switches over to a more gradual collapse when: nuclear fusion begins in the core of the cloud. hydrogen in the cloud is completely ionized. convection sets in below the surface of the young star. the cloud becomes opaque to its own radiation.
The initial stage of star formation is a free-fall collapse. This switches over to a more gradual collapse when: nuclear fusion begins in the core of the cloud. hydrogen in the cloud is completely ionized. convection sets in below the surface of the young star. the cloud becomes opaque to its own radiation.
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Transcribed Image Text:The initial stage of star formation is a free-fall collapse. This switches over to a more gradual collapse when:
nuclear fusion begins in the core of the cloud.
hydrogen in the cloud is completely ionized.
convection sets in below the surface of the young star.
the cloud becomes opaque to its own radiation.
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