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Summary

All the matter and light we can see in the universe makes up a trivial five per cent of everything. The rest is hidden. This could be the biggest puzzle that science has ever faced. 

Since the 1970s, astronomers have been aware that galaxies have far too little matter in them to account for the way they spin around: they should fly apart, but something concealed holds them together. 

That ’something' is dark matter - invisible material in five times the quantity of the familiar stuff of stars and planets. By the 1990s we also knew that the expansion of the universe was accelerating. Something, named dark energy, is pushing it to expand faster and faster. 

Across the universe, this requires enough energy that the equivalent mass would be nearly 14 times greater than all the visible material in existence. Brian Clegg explains this major conundrum in modern science and looks at how scientists are beginning to find solutions to it.

©2019 Brian Clegg (P)2020 W. F. Howes Ltd

Critic reviews

“'Clear and compact. It's hard to fault as a brief, easily digestible introduction to some of the biggest questions in the Universe.” (Giles Sparrow) 

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good book

A perfect length and nice insight into the current non-understanding of what the universe is made of, doesnt slow down to explain the history of every single idea which as a reader of science books is very welcome.

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  • 26-12-20

Awesome and cool!

It really goes into depth about dark matter and dark energy and I recommend it.

3 people found this helpful