Are you ready to start the challenge? Select the image below to begin.
Tip: If you get stuck, take a look at the helpful tutorial, which can be accessed from the game homepage.
- Playing on a phone or a tablet? Choose the full-screen experience - REMEMBER TO TURN YOUR DEVICE INTO LANDSCAPE MODE BEFORE PLAYING
For best results, use a modern web browser. Upgrade to the latest version of Internet Explorer or try a free alternative like Google Chrome, Firefox or Safari.
Take your learning further
- Discover more by studying physics and astronomy with The Open University.
- If you want to see what kind of topics you'll be studying, try out some course materials for free first (look under the 'Try' column).
Rate and Review
Rate this activity
Review this activity
Log into OpenLearn to leave reviews and join in the conversation.
Activity reviews