Solar system

3. a natural satellite which orbits the Earth
8. the branch of science that studies outer space, celestial bodies, and the universe
9. an instrument used to view objects in outer space
11. the second largest planet in our solar system that features an impressive system of rings
13. an envelope of gases that surround a planet
15. a hot ball of gas that appears as a small bright light in the sky at night
16. a bright object in space that has a tail of gas and dust
17. the path a celestial object takes around a star or planet

1. an area in space with gravity so intense even light cannot escape its pull
2. a mass of rock that moves around in space
3. a spiral galaxy where our Solar System and Earth are located
4. a person who is specially trained to travel into outer space
5. the only place in the Universe where life is known to exist
6. the 'Red Planet'
7. a system consisting of a large number of stars bound together by gravity
10. everything that exists including the stars, planets, matter, energy and time
12. a small rocky object that orbits the Sun that has broken off from a comet or asteroid
14. a meteoroid that has entered the Earth's atmosphere is called a meteor