	Java Games: Flashcards, matching, concentration, and word search.

The Universe

Tools

A	B
astronomers	experts dealing with space
collapse	cave in
collide	to strike violently together
compact	firmly packed together
galaxy	a group of billions of stars that form one system
particles	extremely small units of matter
expository nonfiction	true; explains the nature of an object
obscure	dark; you can't see it
astronomy	study of the stars
connotation	emotional meaning of a word

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