Solve these clues to fill the grid.
- The second nearest planet to the sun
- 3 Across
- Everything that exists anywhere
- 6 Across
- The branch of physics that studies celestial bodies and the universe as a whole
- 7 Across
- The planet we live on
- 9 Across
- The smallest planet and the nearest to the sun
- 10 Across
- The month following February and preceding April (plural)
- 12 Across
- Relating to or derived from the sun or utilizing the energies of the sun
- 13 Across
- The star our planet orbits
- 14 Across
- A large asteroid that was once thought to be the farthest known planet from the sun
- 1 Down
- A magnifier of images of distant objects
- 2 Down
- The largest planet and the 5th from the sun
- 4 Down
- A relatively small extraterrestrial body consisting of a frozen mass that travels around the sun
- 5 Down
- A giant planet that is surrounded by three planar concentric rings of ice particles
- 8 Down
- A giant planet with a ring of ice particles
- 11 Down
- Natural satellite that orbits the Earth
- 12 Down
- Ball of burning gas shining in the night sky
- 13 Down