Thought Aliens Were Sending Signals, But The True Source Of The Radio Waves Is Something Else

For the past decade, Earth has been receiving unusual radio signals from deep within space. Initially, scientists believed these signals could be from extraterrestrial intelligence, sending messages across the cosmos. However, a recent breakthrough has revealed the true source of these mysterious radio waves - and it's not aliens.

According to Network 18 report, the signals have been traced back to a rare binary star system located more than 1,600 light-years away, in the Saptarishi constellation, also known as Ursa Major. This system consists of two stars - a red dwarf and a white dwarf - orbiting each other. The unique interaction of their magnetic fields is responsible for the regular radio signals detected by researchers.

Dr Iris de Ruiter, a leading scientist at the University of Sydney, made the discovery in 2024 while studying data from the Low Frequency Array (LOFAR) radio telescope in the Netherlands. During her research, Dr de Ruiter found a signal from 2015 hidden in the data and discovered several others from the same region. Unlike fast radio bursts (FRBs), which are short and intense, these signals lasted several seconds with lower intensity and energy.

The signals are so regular that they resemble a cosmic clock, reaching Earth every 125 minutes, or roughly two hours. Scientists then used a large optical telescope to closely examine the binary star system. They were able to detect the faint white dwarf, which had previously been invisible to standard telescopes. White dwarfs are the dense, hot remnants of stars that have run out of nuclear fuel and no longer shine brightly.

The magnetic fields of the red dwarf and white dwarf stars interact to create these periodic radio waves, which travel across space for over 1,600 years before reaching Earth. This discovery provides new insights into how magnetic fields between two stars can generate consistent radio signals, opening the door to exploring other potential systems that might be sending similar signals.

As scientists continue their research, this breakthrough offers an exciting opportunity to further understand the role of radio waves in space and the various energy sources at work in our galaxy.