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Scientists see no evidence of life in 100,000 galaxies
After searching 100,000 galaxies for signs of highly advanced extraterrestrial life, a team of scientists using observations from NASA\'s WISE orbiting observatory has found no evidence of advanced civilizations in them. The team also discovered some mysterious new phenomena in our own Milky Way galaxy.
Washington: After searching 100,000 galaxies for signs of highly advanced extraterrestrial life, a team of scientists using observations from NASA's WISE orbiting observatory has found no evidence of advanced civilizations in them. The team also discovered some mysterious new phenomena in our own Milky Way galaxy.
"The idea behind our research is that, if an entire galaxy had been colonized by an advanced spacefaring civilization, the energy produced by that civilization's technologies would be detectable in mid-infrared wavelengths," said lead researcher Jason T. Wright, assistant professor of astronomy and astrophysics at the Centre for Exoplanets and Habitable Worlds at Penn State University.
Freeman Dyson, a theoretical physicist, had proposed in the 1960s that advanced alien civilizations beyond Earth could be detected by the telltale evidence of their mid-infrared emissions. It was not until space-based telescopes like the WISE satellite that it became possible to make sensitive measurements of this radiation emitted by objects in space.
