Across
- 1. ...is like Earth's twin sister in space! It's the second planet from the Sun and it's very bright in the sky.
- 3. The smallest planet and the closest to the Sun, so it's very hot is...
Down
- 2. ...is our home sweet home in space! It's the third planet from the Sun and the only one we know of that has life.
- 3. ...is like the red planet of adventures! It's the fourth planet from the Sun and it's covered in rusty-red dust.