Scientists Find No Evidence of Alien Life in 100,000 Galaxies

Alien Life

For many years, scientists were on a hunt for alien life in earth’s planetary neighborhood and distant planets.

A team of scientists searched 100,000 galaxies for signs of highly-advanced extraterrestrial life, but they have found no evidence of advanced civilizations in them. The researchers used observations from NASA’s WISE orbiting observatory.

“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—exactly the radiation that the WISE satellite was designed to detect for other astronomical purposes,” said Jason T. Wright, an assistant professor of astronomy and astrophysics at the Center for Exoplanets and Habitable Worlds at Penn State University.

The researchers’ first paper about its Glimpsing Heat from Alien Technologies Survey (G-HAT) was published in the Astrophysical Journal Supplement Series. Also among the team’s discoveries were some mysterious new phenomena in our own Milky Way galaxy.

“Whether an advanced spacefaring civilization uses the large amounts of energy from its galaxy’s stars to power computers, space flight, communication, or something we can’t yet imagine, fundamental thermodynamics tells us that this energy must be radiated away as heat in the mid-infrared wavelengths,” Wright said, adding that “these same basic physics causes your computer to radiate heat while it is turned on.”

In the 1960’s, Theoretical Physicist Freeman Dyson proposed that advanced alien civilizations beyond Earth could be detected by the telltale evidence of their mid-infrared emissions. Roger Griffith, a post baccalaureate researcher at Penn State and the lead author of the paper, scoured almost the entire catalog of the WISE satellite’s detections—nearly 100 million entries—for objects consistent with galaxies emitting too much mid-infrared radiation. Then, he individually examined and categorized around 100,000 of the most promising galaxy images.

“We found about 50 galaxies that have unusually high levels of mid-infrared radiation. Our follow-up studies of those galaxies may reveal if the origin of their radiation results from natural astronomical processes, or if it could indicate the presence of a highly advanced civilization,” according to Wright.

As we reported previously, experts at the NASA believe that they could be able to find alien life in the next 10 to 20 years. Talking to a public panel in Washington, Ellen Stofan, chief scientist for the National Aeronautics and Space Administration, said that she believes “we are going to have strong indications of life beyond Earth in the next decade and definitive evidence in the next 10 to 20 years.”

“We know where to look, we know how to look, and in most cases we have the technology,” Stofan said.

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About the author

Nadeem has more than 5 years of experience as a news writer/editor. He started his career as a business news reporter at a Virginia-based financial research firm in 2008. At Morning Ledger, Nadeem is responsible for writing news stories on health and science topics.