Distance

What is a light year?





Hunt the Asteroids

How do we find asteroids?



An image of a pair of binoculars on the Earth looking out to space showing small asteroids scattered through it.


Distances in Space

Distances to objects in space are very, very large. The nearest star (excluding the Sun), Alpha Centauri, is 41.23 trillion km, or 41,320,000,000,000 km!!



a starry background with a tape measure and the word year


Investigate: Measure 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?



Picture of a galaxy with a ruler next to it and question marks


Maths with the Moon

Short Intro Text: 
The Apollo mission badge. It shows a large capital A between drawings of the Moon and the Earth. The constellation of Orion is in front of the A
The Apollo missions badge
Credit: NASA




How is the Universe Expanding?



Illustration representing the mesh used to describe gravity.


Explore The Moon's Surface

You have probably seen the Moon in the sky but have you ever studied it in detail?



The surface of the Moon with cartoon rulers and tally-counts


Kepler's Laws: Find the Mass of the Sun

Many years ago, a mathematician named Johannes Kepler created a set of rules explaining planets' movement in our Solar System.



The picture shows a cartoon portrait of Johannes Kepler in front of an artist's impression of the Solar System.


What Is Kepler's Third Law?



This is a cartoon image of Johannes Kepler and Isaac Newton with a parchment-like background. A diagram of a planet's orbit is featured in the middle behind the figures. To the right of the figures, is a cartoon of an apple falling.


What Is Kepler's Second Law?



This is a cartoon image of Johannes Kepler with a parchment-like background. A diagram of a planet's orbit is featured in the top right corner.


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