Scientists Say Technosignatures May Point to Advanced Alien Civilizations

Breaking News

Scientists Say Technosignatures May Point to Advanced Alien Civilizations

 

Scientists and researchers have been searching for life outside Earth for many years. Although nothing much has changed since we first trained our eyes toward the stars, experts now say they may have a real shot at finding signals that could indicate the presence of something unnatural through technosignatures.

 

Photo Credit: Shutterstock

 

Technosignatures, which can signal the presence of life, is any measurable property or effect that provides scientific evidence of past or present technology. The term was coined by astronomer Jill Tarter in 2007. However, astronomers have been searching for these even before the birth of the term. They have been searching for signals, like a planet that’s a bit too bright, because they may discover the existence of intelligent civilizations elsewhere in the cosmos. 

 

Photo Credit: Shutterstock

 

Svetlana Berdyugina, the director of the Kiepenheuer Institute for Solar Physics in Freiburg, Germany, revealed several major classes of technosignatures: chemical signatures. According to Live Science, a science news website that features groundbreaking developments in science, space, technology, health, the environment, our culture, and history, this includes waste heat, which is "an unavoidable result of any kind of activity,” "self-luminous" signals such as artificial illumination, radio, or laser communication; megastructures that reflect, absorb, or block light from a planet's host star, and atmospheric pollution.

 

Photo Credit: Shutterstock

 

The scientists also indicated what technosignatures can look like. For instance, data anomalies, such as an unusual atmospheric makeup could be a clue to "complex life engineering its environment.” Another is the ultrafast blinking of a star. "If you see a star, say, blinking on and off faster than a microsecond, that's not obviously a natural phenomenon," Joseph Lazio, an astronomer at NASA's Jet Propulsion Laboratory, said. 

Not everyone is convinced that this search can get good results though. Gustavo Cruz Diaz, a postdoctoral fellow at the NASA Ames Research Center, stated that alien technosignatures might be too faint to be detected. "If extraterrestrial life looks at us, they will not find a [single] technosignature," he said. 

 

SIMIALR POST

2019.04.17

Kayla Zosa

The Social and Cultural Growth of Ancient River Civilizations