After decades of searching for alien signals in narrow radio and microwave bandwidths, a new paper suggests that we take a wholly different approach. The idea is to broaden the search to a much wider range of the electromagnetic spectrum.
Conventional SETI (Search For Extraterrestrial Intelligence) strategies have long been built on the idea that intelligent extraterrestrials (ETI) would aim to communicate with other intelligent civil… [+5551 chars]
