Across
- 2. it is 11 times wider than the earth
- 3. the first planet located through mathematical calculations.
- 4. our space neighborhood
- 6. it is 7926 miles around
- 7. a massive ball made out of hydrogen and helium
Down
- 1. it is the seventh planet from the sun
- 5. it is named for the swiftest of the ancient Roman gods.