All life on Earth may owe its existence to the right balance of dark matter in the universe (Image: NASA)
IT’S not just the nature of dark matter that’s a mystery – even its abundance is inexplicable. But if our universe is just one of many possible universes, at least this conundrum can be explained.
The total amount of dark matter – the unseen stuff thought to make up most of the mass of the universe – is five to six times that of normal matter. This difference sounds pretty significant, but it could have been much greater, because the two…
