Why Do Shadows Change Over Time?
Have you noticed that your shadow changes over time? The cartoon on this page shows why shadows change during the day.
Host A Space Debate
Should humans colonise Mars? Is there life in the Universe? Science continually seeks to answer big questions - but it takes a lot of research and communication to come to a consensus.
Why not host a debate and try it yourself?
Order the Orbit
These orbit maps of the inner Solar System are in the wrong places on the calendar! Can you rearrange them so each image is on the correct date?