Question 7 / Scroll down for the answer

1 1 0
                                        

If you know the speed of light and the distance to the Moon then this question will be easy!

If you were to switch on a strong light on the Moon facing the Earth how long would that light take to reach the surface of our planet?

Just over one second / Just over 15 seconds / Just over one minute

.

.

.

.

.

.

.

.

.

.

.

.

.

.

.

Answer to question 7 / Just over one second.

The speed of light is almost 300,000 kilometres per second and our natural satellite the Moon is 384,000 kilometres from the Earth.

Questions About SpaceWhere stories live. Discover now