Astronomy CH.1 (Here and Now) Crossword
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Down:
1) a small, nonluminous body formed by accretion in a disk around a protostar2) the spiral galaxy containing our sun; visible in the night sky as the milky way4) the sun and its planets, asteroids, comets, and so on; sun and its planets, including earth5) the reasoning style by which scientists test theories against evidence to understand how nature works7) Average distance from Earth to the sun; (1.5 x 10^8 km or 93 x 10^6 mi)9) the area visible in an image. usually given as the diameter of the region10) includes everything: billions of galaxies, each containing billions of stars, and billions of planetary systems12) a large system of stars, star clusters, gas, dust, and nebulae orbiting a common center of mass; a great cloud of stars, gas, and dust held together by the combined gravity of all of its matter |
Across:
3) long spiral pattern in a disk galaxy composed of bright stars, star clusters, gas, and dust. spiral arms extend from the center of the edge of the disk of spiral galaxies6) the hazy band of light that circles our sky, produced by the glow of our galaxy8) a globe of gas held together by its own gravity and supported by the internal pressure of its hot gases, which generate energy by nuclear fusion 11) the system of recording very large or very small numbers by using powers of 1013) contains our solar system plus billions of stars and whatever planets orbit them14) the unit of DISTANCE light travels in 1 year |
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