Задание
Match the words to their explanations.
- Объекты 1
- an alien spaceship
- the distance light can travel in a year
- a thousand million
- someone who travels into space
- an object that goes round a planet
- a piece of rock flying through space
- what the asteroid becomes when it enters the Earth’s atmosphere
- Объекты 2
- UFO
- light year
- billion
- cosmonaut
- satellite
- asteroid
- meteor