“It’s possible that the Milky Way is partially settled, or intermittently so; maybe explorers visited us in the past, but we don’t remember, and they died out,” says Jonathan Carroll-Nellenback, an astronomer at the University of Rochester and his collaborators in a new study that suggests it wouldn’t take as long as thought … Continue reading “Unvisited for Millions of Years” –New Spacefaring Solution to the Fermi Paradox