A photon can cross a billion light-years while accumulating no elapsed time along its path. Special relativity links space ...

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LAST month, I answered a reader question about space-time expansion. They wanted to know what space-time is expanding into, given that we scientists tend to analogise with a balloon that is being ...

Physicists, mathematicians and philosophers have been exploring the possibility of going forward to the future or back to the ...

They say time waits for no man but David Gozzard might have found a way to at least tame it. The UWA PhD student is investigating ways to more accurately transmit time signals. It is work that will ...

A new theoretical paper has tackled the phenomenon of quantum decoherence, the process by which objects slip out of the quantum world and start behaving classically. The paper approaches this in a new ...

And why not? Cheered on, to his disgust, by most of his Berlin colleagues, Germany had started a ruinous world war. He had split up with his wife, and she had decamped to Switzerland with his sons. He ...

Albert Einstein's general theory of relativity describes how the fabric of space and time, or spacetime, is curved in response to mass. Our sun, for example, warps space around us such that planet ...

The question of how gravity interacts with the quantum world has long perplexed physicists, but a non-quantum theory of space-time could present an answer ...