Solar system

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Across
  1. 4. The natural process that occurs when certain gases in the atmosphere absorb and reradiate thermal energy from the sun
  2. 6. The time it takes an object to complete one rotation
  3. 7. The time it takes to travel once around the sun
Down
  1. 1. Earth and other inner planets that are closest to the sun including mercury venus and mars
  2. 2. unit The mean distance between Earth and the sun, about 150 million kilometers.
  3. 3. a small rocky body orbiting the sun.
  4. 5. a small rocky body orbiting the sun.