Dark Matter and Dark Energy

The Hidden 95% of the Universe

New Paperback Illustrated

Postscript summary

During the 20th century it became clear that our traditional understanding of cosmology was too simplistic, since there must be not only some invisible material holding together galaxies but also an unknown phenomenon that is driving the universe’s accelerating expansion. Brian Clegg describes how the existence of this ‘dark matter’ and ‘dark energy’ was discovered and explains the different theories and experiments that researchers have been employing as they seek knowledge about this challenging aspect of modern science.

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