Astronomy Vocabulary

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Across
  1. 3. A star in the Milky Way located in a spiral arm.
  2. 4. Used to measure the distance to stars and galaxies.
  3. 5. Made up of the planets,moons,asteroids,comets,dust and gas that orbit the Sun.
  4. 6. May either have a 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.
  5. 8. spiral galaxy that we live in.
  6. 9. 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.
Down
  1. 1. The movment of an object in a circular or elliptical course around another object. The Earth completes 1 of these every 365 days.
  2. 2. Space rocks smaller than an asteroid floating randomly in space.
  3. 3. Occurs when the moon passes directly between the sun and earth, blocking the Suns light and casting a shadow over a certain area on earth.
  4. 7. Made up of gas,dust, and billions of stars and have different shapes (Spiral, Elliptical, Irregular).