Solar system

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Across
  1. 3. As with gas giants, ice giants also lack a well defined "solid surface.
  2. 5. the star at the center of the Solar System
  3. 6. is a minor planet of the inner Solar System
  4. 7. farthest-known Solar planet from the Sun
  5. 8. the largest moon of Saturn
  6. 11. the largest in the Solar System
  7. 13. is an object that has been intentionally placed into orbit
  8. 14. the the nearest planet to the Sun
Down
  1. 1. As the brightest natural object in Earth's night sky after the Moon
  2. 2. is a dwarf planet in the Kuiper belt
  3. 4. It is a gas giant with an average radius of about nine and a half times that of Earth
  4. 6. is a person trained, equipped, and deployed by a human spaceflight program to serve as a commander or crew member aboard a spacecraft.
  5. 9. often referred to as the “Red Planet”
  6. 10. large amounts of water can be found throughout the Solar System
  7. 12. an astronomical object comprising a luminous spheroid of plasma held together by its gravity
  8. 15. is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing