Across
- 2. a system of millions and billions of stars held together by gravity
- 3. system the collection of eight planets and their moons in orbit round the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets. The planets of the solar system are (in order of distance from the sun) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
- 4. a small rocky body orbiting the sun
- 5. a celestial body moving in an elliptical orbit round a star.
- 10. a piece of rock or metal that has fallen to the earth's surface from outer space as a meteor made of rock or iron
- 11. the curved path of a celestial object or spacecraft round a star, planet, or moon, especially a periodic elliptical revolution.
- 12. a spot or patch that appears from time to time on the sun's surface, appearing dark by contrast with its surroundings.
Down
- 1. a body that orbits a planet. can be man made or Natural
- 6. year a unit of astronomical distance equivalent to the distance that light travels in one year
- 7. celestial object consisting of a nucleus of ice and dust that creates a tail of gas
- 8. a small body of matter from outer space that enters the earth's atmosphere that appears as a streak of light.
- 9. a natural satellite of planets
- 12. a humongous body of gases that emit light and heat
- 13. a star in the centre of our solar system