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Chandra X-ray Observatory |
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Crossword Puzzle #1 (general content)
Across: 3. X-radiation was discovered by Wilhelm ____________. 4. Explosive event occurring in or near an active region on the Sun. 6. Branch of science that studies the universe above Earth's atmosphere. 9. A grouping of stars into a recognizable pattern in the night sky. 11. The attractive effect that a massive object has on other massive objects. |
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Down:
1. Center for Astrophysics (Harvard Smithsonian). 2. A measure of the total amount of matter contained within an object. 3. The tendency of a wave to bend passing from 1 transparent medium to another. 5. The study of the origin and evolution of the universe as a whole. 7. The totality of all matter, radiation and space. 8. An elementary particle with a negative electric charge. 9. Subrahmanyan Chandrasekhar's nickname 10._____________ temperatures produce x-rays. |
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