Unit 2 Vocabuary

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Across
  1. 4. the large, empty part of the universe that does not contain any matter
  2. 6. an event whereby one astronomical body passes between two other astronomical bodies
  3. 9. the temporary blockage of sunlight by the Moon as it travels between Earth and the Sun
  4. 10. a body in outer space that orbits a planet; a natural satellite
  5. 11. a group of solar systems, dust, and gas held together by gravity
  6. 13. the spinning of a celestial body, such as a planet, around an axis
Down
  1. 1. everything that exists in, on and around the Earth
  2. 2. when the moon passes directly behind the Earth and into its shadow
  3. 3. the galaxy containing the Sun and its solar system, along with millions of other stars in a spiraling pattern, part of which can be seen as a band of "milky" diffuse light across the night sky
  4. 5. a small object made of rock or metal that orbits the sun
  5. 7. a massive ball of gas in outer space that gives off heat, light and other forms of radiation
  6. 8. Phases) a description of the amount of illumination of the Moon as seen from Earth at different points in its cycle
  7. 9. a system of objects that revolve around a star
  8. 10. a streak of light in the sky that forms when a piece of rock from space burns up in Earth's atmosphere
  9. 12. a large circular mass that revolves around a star