Science Astronomy Vocabulary Crossword

3. made up of gas, dust, and billions of stars and have different shapes (elliptical, spiral, irregular)
5. unit of measurement; used to measure the distance to stars and galaxies in space. The distance in one light year is equal to the distance light travels in one year. 9.46 x 10(p12)km (5.88 x 10(p12) miles)
7. studied in relation to the planet they orbit. Most are rocky bodies covered with craters, but some have unique characteristics. Movement is based on revolution around their planets and rotation on their axis.
8. chunks of rock that burn upon entering a planets atmosphere
9. have a main body or head (ice, methane and ammonia and dust) and a tail that emerges as it gets closer to the sun during its orbit. The effects of solar winds result in the tail always pointing way from the sun. Have long, narrow, elliptical orbits that cause them to cross paths with other objects in the solar system. Most originate from the regions of the solar system that lie beyond the orbit of Neptune.

1. made up of planets, moons, asteroids, comets, dust and gas that orbit the sun
2. the galaxy in which you live
4. may have either a terrestrial/rocky surface or a gaseous surface. May have rings or other unique surface characteristics. Movement is based on revolution around the sun and rotation on an axis
6. most are rocky bodies that orbit in a region in the solar system known as the asteroid belt between mars and jupiter, they vary in size and shape, and movement is based on their revolution around the sun.
10. a star in the milky way galaxy located in a spiral arm about 2/3 of the way from the center of the galaxy