Scientists are trying to figure out if time travel is even theoretically possible. If it is, it looks like it would take a whole lot more knowledge and resources than humans have now to do it.
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Articles on Wormholes
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When it comes to physics experiments, quantum simulations aren’t quite the real thing – but in some cases they’re much closer than you’d expect.
Strangely behaving matter could one day explain some of the mysteries of space.
An astrophysicist explains what wormholes are and how these theoretical space-time tunnels have popped up in the solutions to a set of decadesold equations.
Calculations show that wormholes should create a spectacular display of gamma rays that we could try to observe.
Despite his playful optimism, Hawking recognised that the undiscovered laws of physics may prevent time travel.
The pull created by a black hole is so strong that if you get too close to one – even if you are travelling away from it at the fastest speed it is possible to go – you will never be able escape.
A wormhole is like a tunnel connecting two places in space. They would be incredibly useful and are great for science-fiction stories.
The problem is we haven’t found any evidence of them existing.
Top contributors
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Associate Professor, Philosophy of Science, The University of Melbourne
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Reader in Theoretical Astrophysics, Liverpool John Moores University
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Postdoctoral Fellow, Gravitational Wave Data Analysis, Australian Research Council Centre of Excellence for Gravitational Wave Discovery (OzGrav), The University of Melbourne
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Postdoctoral Research Fellow, Astrophysics, The University of Queensland
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Senior Research Fellow and UKRI Future Leaders Fellow in the Particle Theory Group, Department of Physics and Astronomy, University of Manchester
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Senior Lecturer in Astrophysics, University of Hertfordshire
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Professor of Physics, University at Buffalo
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Assistant Professor of Astronomy and Astrophysics, University of Maryland, Baltimore County
