Striking evidence has been found for the enigmatic "stuff" called dark matter which makes up 23% of the Universe, yet is invisible to our eyes.
The results come from astronomical observations of a titanic collision between two clusters of galaxies 5.7 billion light-years away.
Astronomers detected the dark matter because it separated from the normal matter during the cosmic smash-up.
The research team are to publish their findings in the Astrophysical Journal.
They used the Hubble and Chandra space telescopes to study the object MACSJ0025.4-1222 - formed after an incredibly energetic collision between two large galaxy clusters.
Each of these large clusters contains about a quadrillion times the mass of our Sun. | Read more
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