2. What is the speed of light?
300,000 m/s
186,000 km/s
300,000 km/s
186,000 m/h

3. Which was the first Apollo mission to land on the Moon?
Apollo 7
Apollo 10
Apollo 11
Apollo 12

4. Astronauts in space appear weightless because...
they are in a constant state of free fall.
there is no gravity in space.
it is just a camera trick.
space ships use anti-gravity.

5. Why do scientists believe we will never be visiting planets around distant stars?
No one wants to go.
The sun's gravity is too strong.
It is just too far to go.
You will get pulled into a black hole.

6. The Saturn V rocket used to travel to the moon had to fly at about 11 km/s (about 25,000 m/h) in order to escape the earth's gravity. Calculate how fast the lunar module needed to travel to escape the moon's gravity?
24 km/s
2.4 km/s
2,400 km/h
24,000 km/h

7. Traveling at the speed of light, how long would it take to reach our nearest star?
4.2 years
42 years
80 years
80,000 years

8. Who was the first person in space?
Neil Armstrong
Yuri Gagarin
John Glenn
John F. Kennedy

9. Which of the following does not have water or water-ice?
Earth
Earth's Moon
Mars
Mercury