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in partnership with the Dill Faulkes Educational Trust

 

Angles

Astronomers use angles a lot to work out where things are in the sky. We can measure the size of an object in the sky and mark its position by using angles.

If we know how much of the sky an object covers (as an angle) and how far away it is - we can work out its actual size.

Image
An image of a coastline with a large coin magnified over a distant cathedral, demonstrating perspective or scale
Credit
This work by The Schools' Observatory is licensed under All rights reserved
An arcsecond is a very small angle

Biographies

Many people have changed the course of history. Some were leaders or rulers, but many were scientists.

Scientists have helped us make sense of the night sky. Their work has shown us how the Universe works.

Image
A painting of Maria Mitchell. She is sat down, using one hand to hold the end of a telescope whilst she looks through it.
Credit
This work by H. Dassel (1851) is licensed under Creative Commons Zero v1.0 Universal