Lesson 1

4. The round object that moves around the Earth and shines at night by light reflected from the Sun.
5. A piece of rock from outer space that hits the Earth’s surface.
7. A vehicle that travels in space.
9. A mass of ice and dust that moves around the Sun and looks like a bright star with a tail.
11. To know the meaning of words, a language, what somebody says, etc.
14. A piece of equipment like a tube, containing lenses, that you look through to make objects that are far away appear larger and nearer.
17. The whole of space and everything in it, including the earth, the planets and the stars.
18. Large balls of burning gas in space that we see as points of light in the sky at night.
19. Rocky or dusty small bodies orbiting the Sun.

1. To live in a place or in a particular way.
2. The Sun and all the planets that move around it.
3. A special building with a telescope or other equipment that scientists use to watch the stars, the weather, etc.
6. To obtain something.
7. The activity of learning from books or by examining things in the world.
8. Extremely large in area, size, amount, etc.
10. To gain knowledge or skill by studying, from experience, from being taught, etc.
12. A very small spot; a small piece of dirt.
13. A thin flat round object.
15. Any of the large systems of stars in outer space.
16. To hand something to somebody so that they can look at it, use it or keep it for a time.