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You are reading an older version of this FlexBook® textbook: CK-12 Earth Science Concepts For High School Go to the latest version.

15.11: Dark Matter

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

dark energy

dark energy

An as yet undiscovered form of energy that we cannot see.
dark matter

dark matter

Matter in the universe that doesn't emit light.

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Difficulty Level:

At Grade

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Date Created:

Feb 24, 2012

Last Modified:

Jan 30, 2016
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