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doit_the_clown doit_the_clown
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7 years ago
Most comet nuclei are believed to be
A)   carbonaceous chondrite meteorites, carbon material, ignited by sunlight and trailing long smoke trails.
B)   pieces of dusty ice left over from the formation of the solar system.
C)   pieces of dirty ice ejected from the surface of the icy satellites of the outer planets by asteroid impacts.
D)   pieces of rock or iron chipped from asteroids by impacts.
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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discovererdiscoverer
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7 years ago
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doit_the_clown Author
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7 years ago
Helped a lot
deathwing
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Yesterday
Thank you, thank you, thank you!
54321abs
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2 hours ago
Thanks for your help!!
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