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Home Q & A Board Science-Related Homework Help Physics
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staedtler staedtler
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7 years ago
A planetary nebula is
A)   a gas shell, the atmosphere of a red giant star, slowly expanding away from the core of the star.
B)   a contracting spherical cloud of gas surrounding a newly formed star in which planets are forming.
C)   the nebula caused by the supernova explosion of a massive star.
D)   a disk-shaped nebula of dust and gas rotating around a relatively young star within which planets will eventually form.
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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