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Home Q & A Board Science-Related Homework Help Physics
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symbo symbo
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7 years ago
What is a protostar?
A)   A sphere of gas after collapse from an interstellar cloud but before nuclear reactions have begun
B)   A small interstellar cloud before it collapses to become a star
C)   A star near the end of its life before it explodes as a supernova
D)   A shell of gas left behind from the explosion of a star as a supernova
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
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discovererdiscoverer
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7 years ago
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symbo Author
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7 years ago
Smart ... Thanks!
jakechambo3
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Yesterday
This site is awesome
lolaww
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2 hours ago
this is exactly what I needed
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