Make your own Orrery

Orrery’s are fantastic tools to demonstrate the planetary motions in our Solar System, but rare since they often require an advanced (accurate) clock work to work. It is however straight forward to make one for your self with paper and scissors. The children can colour their own orrery and play with it to explore several interesting phenomena in our Solar System.

Download the pdf and print it, one per child, and follow the instructions printed on the sheet. You will need colours, scissors, split pins (split clips) and a laminator (optional). If you do not have a laminator machine, it is advisable to print the file below on the thickest paper you have available.

This activity is also available in:


Keywords: children, paper, scissors, paper clips,

Formation of the Moon

In this activity, pupils will learn about the formation of the Moon. They will also learn about the lunar orbit and the distance to the Moon. In groups, pupils will perform simple classroom experiments to investigate how craters are formed when a small asteroid strikes a planetary surface. They will understand that the appearance of a crater depends on the speed of the rock and to a lesser degree the angle at which it hits the ground.

Impact calculator

This app allows you to simulate impacts on the Earth, Moon or Mars.

You can select the impactor parameters (composition, size, velocity, angle of impact) and then choose a target location. The crater that would be produced by your impactor is then displayed, along with various facts and figures about the impact.

You can compare your crater with real craters on each of the target bodies.