More from Marcus Chown
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Tape measure for the Earth
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When to expect that long-distance call
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Synchronicity is key to hearing ET
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Grey-sky theory puts stargazers in shade
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Grey-sky idea puts astronomers in the shade
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In Alice’s world
Books & Arts
Strange attraction
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It’s an echo from the fifth dimension
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Core reality
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Mini black holes do the monster munch
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Speed freak
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Smash and grab
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