Space

1. - A system consisting of a large number of stars bound together by gravity.
3. the largest planet in our solar system. It features the famous ‘Red Spot’ and a large number of orbiting moons.
5. an object similar to a planet that goes round another planet.
7. the North Star.
9. - A person who is specially trained to travel into outer space.
12. a bright object in space that has a tail of gas and dust.
13. the third largest planet in the Solar System and seventh planet from the Sun. Uranus rolls like a barrel rather than spinning like Earth and was the first planet discovered by telescope.
14. a very large hot ball of gas that appears as a small bright light in the sky at night.
15. - A meteoroid that has entered the Earth's atmosphere is called a meteor.
17. the sun or the moon.

2. a mass of rock that moves around in space. Most asteroids are found between the planets Jupiter and Mars, a region of space known as the asteroid belt.
4. - An instrument used to view objects in outer space.
6. - The path a celestial object takes around a star or planet.
8. - An envelope of gases that surround a planet.
10. - The branch of science that studies outer space, celestial bodies, and the universe.
11. a type of star in space that produces a regular radio signal.
12. - The area of gases and dust that form around a comet as it passes by the Sun.
16. the planet on which we live.