In the new study, the astronomers said that the outer space "phenomena cannot easily account for the observed infrared excess emission."
This discovery has hinted at the existence of a long-hypothesised alien power-generation technology in the Milky Way galaxy.
According to the researchers, a new way has been found to find signs of alien power generation in a project named Hephaistos.
Looking at the data from nearly five million sources, the researchers have created a catalogue of potential Dyson spheres.
The scientists studied the signs of partially completed alien megastructures which hold the possibility of emitting excess infrared radiation.
The scientists carried out a survey of five million distant solar systems with the help of 'neural network' algorithms and it took an interesting turn when they found nearly 60 stars surrounded by what appeared as "giant alien power plants."
Among the 60 stars, seven of them - which were M-dwarf stars and ranged between 60 per cent and 8 per cent the size of the Sun - were seen releasing high infrared 'heat signatures,' as per the astronomers.
In the new study, the astronomers said that the outer space "phenomena cannot easily account for the observed infrared excess emission."
This discovery has hinted at the existence of a long-hypothesised alien power-generation technology in the Milky Way galaxy.
What are Dyson Spheres?
The “Dyson spheres” is a hypothetical concept which encompasses the existence of megastructures that can be built by only extremely technologically advanced civilisations and are designed for sucking energy from the stars.
According to the researchers, a new way has been found to find signs of alien power generation in a project named Hephaistos.
The astronomers first analysed data collected by astronomical surveys Gaia DR3, 2MASS and WISE for flagging Dyson sphere candidates present in the Milky Way.
“In this study, we present a comprehensive search for partial Dyson spheres by analyzing optical and infrared observations from Gaia, 2MASS, and WISE,” wrote the researchers, in a study published in the journal Monthly Notices of the Royal Astronomical Society.
“A specialised pipeline has been developed to identify potential Dyson sphere candidates focusing on detecting sources that display anomalous infrared excesses that cannot be attributed to any known natural source of such radiation," they added.
Meanwhile, two groups of astronomers, headed by Gaby Contardo at the International School for Advanced Studies in Italy and Matías Suazo at Uppsala University in Sweden, led the latest hunt for infrared data which is likely to lead them to the distant 'Dyson sphere.'
Watch: Strongest sign of alien found: The search for life beyond earth The data collected by the Wide-field Infrared Survey Explorer (WISE) space telescope, the European Space Agency's Gaia satellite and the ground-based infrared telescope survey MASS2 were merged by the researchers.
Even though some scientists believe that there may be other explanations for excess infrared signatures discovered, however, Suazo said, "The most fascinating explanation could be actual Dyson spheres."
Looking at the data from nearly five million sources, the researchers have created a catalogue of potential Dyson spheres.
The scientists studied the signs of partially completed alien megastructures which hold the possibility of emitting excess infrared radiation.
“This structure would emit waste heat in the form of mid-infrared radiation that, in addition to the level of completion of the structure, would depend on its effective temperature,” they said.
(With inputs from agencies)
