Stars

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Across
  1. 2. Stars are made mostly of this
  2. 5. When a star explodes it turns into this
  3. 6. Group of stars
Down
  1. 1. The force that attracts a body toward the center of the earth is known as _______.
  2. 2. Stars are made mostly of this
  3. 3. Big bright glowing balls of gas
  4. 4. Absolute measurement