Yet despite researchers’ best efforts over decades to work out the nature of this “dark matter” – to find some clue direct or indirect as to what it’s made of, or even make it in the lab ...

for example dark energy and dark matter. Only five per cent of the Universe is made of the matter (stars, galaxies, people, planets and so on) that is currently understood.

They suggested that this extra mass was made up of ‘dark matter’ - a form of matter with a strong 'negative pressure' Observations of the rotation of galaxies indicated that most of the mass ...