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Scouting the spectrum for interstellar travellers (1203.3980v1)
Published 15 Mar 2012 in physics.pop-ph and physics.space-ph
Abstract: Advanced civilizations capable of interstellar travel, if they exist, are likely to have advanced propulsion methods. Spaceships moving at high speeds would leave a particular signature which could be detected from Earth. We propose a search based on the properties of light reflecting from objects travelling at relativistic speeds. Based on the same principles, we also propose a simple interstellar beacon with a solar sail.
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