Across
- 5. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
- 6. a large spacecraft in orbit around Earth.
- 9. are frozen leftovers from the formation of the solar system composed of dust, rock, and ices.
- 11. An artificial satellite is an object that people have made and launched into orbit using rockets.
- 13. the movement of an object in a circular movement
- 14. 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.
Down
- 1. an optical instrument designed to make distant objects appear nearer,
- 2. the action of rotating around
- 3. A natural satellite is any celestial body in space that orbits around a larger body.
- 4. an elongated rocket-propelled missile or spacecraft
- 7. a small rock body orbiting the sun
- 8. A meteoroid is a small rocky or metallic body in outer space.
- 10. a rocket-launched able to land like an aircraft, used to make repeated journeys between the earth and earth orbit.
- 12. an unmanned exploratory spacecraft made to transmit information about its environment