What is a star?
We can see thousands of stars in the night sky - small points of light in the vastness of space. But what are stars? How do they make light? Why are they different colours? Watch this video to find out some more information about stars!
Investigate the Size of a Galaxy
Have you ever wondered how big a galaxy is? They contain millions to billions of stars but what does that really mean for size?
Reading about sizes in a book is one thing, but what if you could make an observation of a galaxy and then measure its size?
Life on Earth
How are living things connected? What do they need to survive? Can we find clues in the Solar System that help us find out why there is life on Earth?
Our Sun Quiz
The Sun is our closest star and the centre of our Solar System. However, it is only one of several billion stars in our galaxy.
Measure Mountains on the Moon
Measure the Speed of Light
Calculate the Speed of the Planets
Did you know the Earth is travelling around the Sun at nearly 107,000 kilometres per hour?
Explore Gravity
Use our simulator to investigate the effect of gravity on other worlds. Then use your measurements and a bit of maths to calculate the strength of gravity in each location across the Solar System!