Solar System crossword

3. A celestial body in an orbit around a star
4. An artificial body placed in orbit round the earth, moon or another planet to collect information or for communication
5. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction
8. A spot or patch that appears on the sun occasionally that appears dark by contrast to its surroundings
11. A piece of rock or metal that has fallen from space as a meteor
13. A natural satellite of the Earth that by the reflected light of the sun makes it visible

1. A unit of astronomical distance equivalent to the distance light travels in one year which is 9.4607 × 1012 km
2. A star which the planets in our solar system orbit
4. The collection of eight planets and their moons that orbit the sun, together with other smaller bodies that include asteroids, meteoroids and comets.
6. A small rocky body orbiting the sun. They range different sizes and some orbit Mars and Jupiter
7. A object in space consisting of a nucleus of ice and dust and when near the sun
9. A fixed luminous point in the night sky which is a large, remote incandescent body like the sun
10. A small body of matter from outer space that enters the earth’s atmosphere, becoming incandescent as a result of friction and they appear as a streak of light.
12. The curved path of a celestial object or spacecraft round a star, planet or star, or moon, especially a periodic elliptical revolution