Unit 23: Around the Solar System

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Across
  1. 1. a giant ball of extremely hot gas that burns and gives off heat and ligh
  2. 3. System, a group of objects in space, including the Sun and everything that moves around it
  3. 5. a group of stars, planets, dust and gas
  4. 7. a large round object in space that follows a path and moves around a star like the Sun
  5. 8. to move around something in a circular path
  6. 10. to spin on a center point
  7. 12. an object that moves around Earth and sends messages and pictures to help us learn about space
  8. 13. an object that moves around Earth that we see mostly at nighttime in phases
Down
  1. 2. a person who travels into space
  2. 3. a star in the center of the solar system that burns gas and gives off heat and light
  3. 4. everything that can be seen, touched and sensed above Earth’s atmosphere.
  4. 5. a force that weighs down objects
  5. 6. a large piece of rock or metal flying in space that is left over from the planets.
  6. 9. an imaginary line that objects in space follow as they move around a larger object
  7. 11. a tool that makes faraway objects look bigger and closer.