1. Credit: NASA Exploring Space

2. Credit: NASA Space is EMPTY no air cold dark weightless (zero gravity)

3. Credit: NASA

5. What we need for living in space? Air Food Water Spacesuit Toilet Anymore ? Credit: NASA

6. Moon-landing Apollo Missions 太陽神計劃

7. Neil Armstrong Michael Collins Edwin Aldrin

8. The Saturn V rocket carried Apollo 11 to launch to the space

9. The Apollo 11

10. Credit: NASA Apollo 11 July 20, 1969 Neil Armstrong 岩士唐

11. “One small step for man, one giant leap for mankind” -- Neil Armstrong

13. Credit: NASA/Bill Ingalls Rocket 火箭

14. Credit: NASA Escape Velocity 逃逸速度 11.3 km per second

15. Propulsion 噴射式推進