Learning resource
What’s inside a black hole?
Royal Observatory astronomer Rad explains where black holes come from, how we know they’re there and the strange effects they have on surrounding matter. 
Learning resource
What Makes the Universe Colourful?
Our Universe is a facinating and beautiful place. Join the Royal Observatory Greenwich astronomers as they head off on a voyage of discovery to find out just what it is that makes it so colourful.
Learning resource
What's the Universe made of?
Students draw a pie chart to show the composition of the Universe.
Learning resource
What is Light?
Our Universe is a vast and very interesting place and light plays a big part in us being able to understand more about it. To find out how join the Royal Observatory Greenwich astronomers as they explore more.
Learning resource
What is Gravity?
From Newton’s longstanding ideas to Einstein’s revolutionary theories, Royal Observatory Greenwich astronomers explain how our understanding of gravity has changed from looking at how gravity affects us in our daily lives and how it governs what we observe in space.
Learning resource
What did the early Universe look like?
A classroom activity that explores light/radiation throughout the history of the Universe and how we can use light to learn about the most distant galaxies.
Learning resource
Unusual Orbits in the Andromeda Galaxy
A classroom activity in which students predict and then measure the rotational velocity of material in a nearby galaxy, using their knowledge of gravitation and Doppler shifts to deduce the presence of dark matter.
Learning resource
The Story of Stars
Have you ever looked up at the night sky and wondered about the stars? What makes them so special? Why are some even different colours? Join the Royal Observatory Greenwich astronomers as they explore the science behind the different types of stars in our Universe.
Learning resource
The Spinning Earth
A classroom activity introducing the rotating Earth and the concept of longitude in which students carry out simple arithmetic to relates the 24 hour clock with the Earth’s rotation.
Learning resource
The Rosetta Mission to Comet 67P
In this classroom activity, students use distance, speed and time to calculate how long a signal takes to reach us from Comet 67P.