Astronomers have detected much of the Universe’s ordinary matter, which had long been missing from accounts of its total mass. Not ‘dark matter’ — the mysterious, invisible stuff that makes up the majority of the Universe’s contents. This is normal matter, but it’s spread so sparsely across intergalactic space that more than three-quarters of it is almost undetectable. Using an ...

Professor Stephen Hawking’s final theory on the origin of the universe, predicting the universe is finite and far simpler than many current theories on it, has been published on Wednesday, April 2, 2018 in the Journal of High Energy Physics. The theory, worked in collaboration with Professor Thomas Hertog from KU Leuven, was submitted for publication before Hawking’s death earlier ...