Содержание
- 2. Just over 400 years ago, Galileo invented a device that allowed viewers to see very distant
- 3. Then the era of space flights started in the 20 century. October, 1957, Laika, a Soviet
- 4. Yuri Gagarin was the first human to journey into outer space when his Vostok spacecraft completed
- 5. Conditions on board a space vehicle orbiting Earth greatly differ from those on its surface –
- 6. The burning candle. There have been experiments in space to this effect, the flame reacts to
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