alien life; earth; rocket; astronaut; explore; solar system; astronomer; gravity; spaceship; discover; Mars; telescope; distance; planet; World;

1. Animals or plants that might leave on other planets are called alien life.

2. Some people believe that there might be alien life on Mars.

3. Last year, got a telescope as birthday present. Now look at the stars every night.

4. Our solar system has eight planets.

5. I don't live on the Moon. I live on the Earth.

6. Gravity makes things fall down.

7. When I was a kid, I wanted to grow up and be an astronaut and travel in space.

8. The distance from the Earth to the sun is about 150 million kilometers.

9. Galileo Galilei was a famous astronomer who used a telescope to study the night sky 400 years ago.

10. Astronomers have discovered hundreds of other planets that orbit other suns.

11. The planet Neptune was discovered in 1846. People didn't know it existed before that time.

12. Why do people want to explore space? Why do they want to find out what is out there?

13. Rockets, like the one in the picture at the top of this page, carry astronauts into space.

14. Another word for planet is World.

15. Perhaps, humans will travel in spaceships to other solar systems and planets in the future.

Ответ:

1. alien

2. Mars

3. telescope

4. Solar system

5.earth

6.gravity

7.astronaut

8.distance

9.astronomer

10.planet

11.discover

12.explore

13.spaceship

14.World

15.rocket