Stars & galaxies

How the humble prism helped unlock the secrets of what the Universe is made of and where it is heading.

Meridian astronomy is the meticulous surveying of the stars so that positions and movements of stars can be known accurately.

The challenges of measuring everything from a fast-moving, wobbly platform through a haze.

With a telescope we can see billons of miles and travel effortlessly back billions of years in time.

The 88 constellations act as a handy map of the skies and a seasonal calendar used from ancient times. But what connects the stars in the same constellation?

If you could squash the Earth into a ball the size of a marble, it would become a black hole. What are these mysterious entities?

Pulsars are among the most regular but shocking objects in the universe sending out massive bolts of electricity across space.

When did the universe start, how come it has all the elements it has and what happens when it’s all over?

The unimaginably large Sun is just one of 200,000,000,000 stars that make up our Galaxy (itself one of many).

There are only a few things money can’t buy and your name on a star is one of them. So how are they named?

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