SpaceBlack holes may be hurtling around at 10 per cent the speed of light When two black holes merge to form a single one, it can zoom off at an extraordinary pace – but scientists have found that it does have a speed limit News
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PhysicsWhy is there something not nothing? The big bang isn’t the only answer The idea that the universe started in the big bang revolutionised 20th-century cosmology. But it seems increasingly unlikely it was a case of something from nothing Features