For the Week ending 07/20/2007
Directions: Choose the word that matches with the definition and appropriately fits into the blank space in the sentence.
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study of the universe as a whole, including theories about its origin, evolution, large-scale structure, and future
She didn't know whether to buy a book on Jupiter specifically or on _______ as a whole. |
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the star system that is closest to the Earth
He got a great look at _______ with his new telescope. |
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billions of stars, dust, and gas all held together by gravity
The name of our _______ is the Milky Way. |
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a strong, rapid increase in the brightness of a star
She thought that she saw a _______ in the sky, but it ended up being an airplane. |
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the amount of time (230 million years) that it takes for the Sun to orbit the center of the Milky Way
The 2 hour lecture was so boring that it felt like a _______ year. |