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Looking for planets orbiting red dwarfs is easier because the stars are less massive.
ECONOMIST: Is there anybody out there?
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For planets around other types of stars, such as red dwarfs, observation might take hundreds of hours.
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This would require a pair of red dwarfs to encounter the solar system and perform an elaborate gravitational dance with it for a few thousand years.
ECONOMIST: To the ends of the earth
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The astronomers focused on binaries of red dwarfs, which are stars that are up to 10 times smaller and 1, 000 times dimmer than the sun.
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Red dwarfs, meanwhile, burn for hundreds of billions of years.
ECONOMIST: Is there anybody out there?
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While red dwarfs are the most common type of star in the Milky Way galaxy, they often do not show up in astronomical surveys because they are too dim in visible light.
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At the end of this time, the earth would elope with one of the red dwarfs, which are extremely long-lived stars and would keep it at least feebly warm for billions more years.
ECONOMIST: To the ends of the earth
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But however self-seeking and power-hungry Mr Thaksin may be, the red-shirt movement now dwarfs his individual ambition.
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"I don't know why everyone says that about my work, " replied the 77-year-old Mr. Graves, who famously decorated the Walt Disney headquarters with a frieze of seven dwarfs and topped an Alessi teakettle with a red bird that tweets an alert when the water boils.
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