Twisted sound beams suggest an advanced civilisation may be able to harness immense amounts of power from a black hole.
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Articles on Doppler effect
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It's all about the strong gravitational field of the black hole.
An astronomer suggests an idea to piggyback on the ambitious Breakthrough Starshot project that aims to send nano spacecraft to Alpha Centauri at a major fraction of the speed of light.
If there are infinite stars – where is all the light?
When an ambulance passes with its siren blaring, you hear the pitch of the siren change: as it approaches, the siren’s pitch sounds higher than when it is moving away from you. This change is a common…
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Lecturer in Optical Physics Science and Engineering Faculty, Queensland University of Technology
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Research Professor and Director of the International Institute for Accelerator Applications, University of Huddersfield
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Professor of Quantum Technologies, University of Glasgow
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Professor of Astrophysics, University of Nevada, Las Vegas
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Postdoctoral research fellow, University of St Andrews
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PhD Candidate in Physics, University of Glasgow
