Vocabulary in Context: Star Birth – Flashcards
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The Sun formed, probably along with other stars, within a large ____
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molecular cloud
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A ____ consists of two stars that orbit each other every few days
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close binary
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A ____ is a "star" so small in mass that its core never gets hot enough to sustain nuclear fusion reactions.
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brown dwarf
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Most of the gas remaining from the process of star formation is swept into interstellar space by a ____
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protostellar wind
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As a protostar's internal temperature increases, its growing ___ helps slow its contraction due to gravity.
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thermal pressure
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Planets may form within the ____ that surrounds a forming star.
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protostellar disk
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Mass can be lost through a _____ of material ejected along a protostar's axis of rotation.
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jet
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A "star" with a mass below 0.08 solar mass has its gravitational contracted halted by _____ .
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degeneracy pressure
