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Mysterious deep-space radio signal reaches Earth after 8 billion years, leaving scientists puzzled

Astronomers have detected a powerful burst of radio waves, identified as FRB 20220610A, after it travelled an estimated 8 billion years through space.

September 17, 2024 / 11:07 IST
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The detection of FRB 20220610A presents a unique chance to explore the universe’s ancient past. (Representative Image: Canva)

Astronomers have detected a powerful burst of radio waves, identified as FRB 20220610A, after it travelled an estimated 8 billion years through space. The signal is one of the most distant and energetic fast radio bursts (FRBs) ever observed. While its origin remains uncertain, the discovery, as reported by Earth.com, offers new insights into a distant galaxy.com

Investigating the Origins of Fast Radio Bursts


FRBs are brief, intense pulses of radio waves that last only milliseconds and continue to puzzle scientists. Theories about their origin range from neutron stars to more exotic celestial objects. Dr Stuart Ryder, an astronomer at Macquarie University, is leading a team to investigate FRB 20220610A and uncover the processes behind these cosmic events.

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The FRB's immense distance suggests it originated far beyond our galaxy, providing a rare opportunity to explore the universe’s distant past. Using the Australian Square Kilometre Array Pathfinder (ASKAP), astronomers traced the signal's source. Dr Ryder noted that ASKAP’s radio dishes played a key role in identifying the burst's location.

FRBs: A Key to Solving the Universe’s Mysteries


Further research, conducted with the European Southern Observatory's Very Large Telescope, pinpointed the FRB's origin in an older, distant galaxy, setting a record for the oldest and most remote FRB identified to date.

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The exact nature of FRBs remains elusive, but some scientists suggest they may be linked to magnetars, the remnants of supernova explosions. A recent FRB, for example, released as much energy in a millisecond as the sun does in 30 years. These powerful bursts may also help solve the mystery of the universe’s hidden matter.

A large portion of the universe's matter remains unaccounted for, but FRBs could help locate it. Professor Ryan Shannon explained that FRBs can detect electrons even in nearly empty regions of space, offering a tool for identifying hidden matter between galaxies.