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Home Q & A Board Science-Related Homework Help Physics
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killian killian
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10 years ago
What is a planetary nebula?
A) a disk of gas surrounding a protostar that may form into planets
B) what is left of its planets after a low-mass star has ended its life
C) the expanding shell of gas that is no longer gravitationally bound to the remnant of a low-mass star
D) the molecular cloud from which protostars form
E) the expanding shell of gas that is left when a white dwarf explodes as a supernova
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padrepadre
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10 years ago
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killian Author
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10 years ago
Thx sir
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