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Blasting out Earth’s location with the hope of reaching aliens is a controversial idea – two teams of scientists are doing it anyway

  • Written by Chris Impey, University Distinguished Professor of Astronomy, University of Arizona
Blasting out Earth’s location with the hope of reaching aliens is a controversial idea – two teams of scientists are doing it anywayScientists think there are 300 million habitable planets in the Milky Way, and some may be home to intelligent life.Bruno Gilli/ESO, CC BY

If a person is lost in the wilderness, they have two options. They can search for civilization, or they could make themselves easy to spot by building a fire or writing HELP in big letters. For scientists...

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