Across
- 1. Planet quite similar to the Earth, but smaller. Liquid water may have existed on its surface in the past. It has two satellites.
- 5. Planet surrounded by a ring system. It has more than 18 satellites.
- 7. Collection of stars, planets, gases and dust. Our is called Milky Way.
Down
- 1. Artificial satellite which orbits the Earth
- 2. Star of our planetary system.
- 3. It is a force which attracts celestial bodies toward the Earth.
- 4. _________ planets are the planets which are further away from the Sun.
- 6. ________ planets are spherical bodies that orbit the Sun, but they don't have a clear orbit. An example is Pluto.