Across
- 2. A natural or man-made object which orbits a larger object; such as the moon orbiting the Earth.
- 4. A point of light in the night sky. In the daytime only one star is visible - the sun - which, like the other stars, is a ball of gas which produces its own heat and light.
- 5. The path of a satellite around a planet or of a planet around its star.
- 6. A natural object orbiting a planet.
- 7. A term referring to the moon.
- 9. The area above a planet’s atmosphere.
- 12. small, rocky, icy and metallic objects that orbit the sun. Most asteroids orbit in the main asteroid belt between the orbits of Mars and Jupiter.
- 13. A large, natural object that orbits a star.
Down
- 1. To move in a circular orbit; such as the Earth going around the sun.
- 3. A person who trains to fly into space.
- 8. The gases surrounding a planet.
- 9. System The collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
- 10. small objects made of rock and frozen gas that orbit the sun. They have a coma or “tail” that is seen when they pass close to the sun. Most originate in the outer solar system.
- 11. To turn around an axis or center point; which causes day and night on the Earth.