History of our planet
100

The first man to land on the moon?.

Who is Neil Armstrong?.

200

The 6th planet from the sun.

what is Saturn?

300

The first ever spacecraft made?.

What is sputnik I?.

400

What started the space race.

Why did the Soviet union responded to the US of their similar intent to launch satellites into space (and to show them they have the power to send nucellar missiles into space?)

500

The end of the space race.(don't over think it)

Who was Neil Armstrong?.