How do we find asteroids?
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?
Did you know there are mountains on the Moon? How tall do you think they are? Are they higher than mountains on Earth?
Complete this activity to find out! You will use high resolution images of the Moon and a bit of maths to investigate the answer.
The Sun is a constant presence in our life on Earth. It gives us the heat and light we need to survive. But it is not a stable place. The Sun is a ball of hot plasma which is constantly changing.
