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We Could Search for Aliens Harvesting Energy from their Pet Black Hole

Of all the unanswered questions in modern science, perhaps the most talked about is whether we are alone in the Universe. A new paper looks at another way we might be able to detect advanced civilisations and at its centre is the need for energy! The more advanced a civilisation becomes, the greater their need for energy and one of the most efficient ways, according to current theories, is to harness the energy from an actively feeding black hole.

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