Author Archive

Chris Impey

Emerging Tech

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

One team will send a series of radio pulses toward the center of the Milky Way, about 10,000 to 20,000 light-years from Earth. The other will beam a message toward a solar system with three Earth-like worlds -- that's only 39 light-years away.