Across
- 2. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
- 3. natural satellite of the earth, visible (chiefly at night) by reflected light from the sun.
- 5. any fairly small natural object from interplanetary space
- 6. an artificial body placed in orbit round the earth or moon or another planet in order to collect information or for communication.
- 8. a celestial body moving in an elliptical orbit round a star.
- 9. a celestial object consisting of a nucleus of ice and dust and, when near the sun, a ‘tail’ of gas and dust particles pointing away from the sun.
- 10. a star round which the earth orbits.
- 11. 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 unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607 × 1012 km (nearly 6 million million miles).
- 4. the curved path of a celestial object or spacecraft round a star, planet, or moon, especially a periodic elliptical revolution.
- 5. is a space rocks that come from leftover comets particles and broken asteroids.
- 6. 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.
- 7. it is a small, rocky objects that orbit the Sun
- 10. a fixed luminous point in the night sky which is a large, remote incandescent body like the sun.