A star 15,000 light years away is sending mysterious signals, leaving astronomers questioning what else is out there in the cosmos

A star 15,000 light years away is sending mysterious signals, leaving astronomers questioning what else is out there in the cosmos

A distant star is sending out bizarre signals never seen before—raising new questions about the universe’s strangest phenomena

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Published: June 7, 2025 at 9:43 am

Find out why this star is rewriting the rulebook in our 1-minute read...

  • Astronomers have detected ASKAP J1832−0911, a star 15,000 light years away, emitting baffling radio and X-ray signals
  • The object pulses every 44 minutes – thousands of times slower than any known pulsar – defining a new class: long period radio transients
  • ASKAP J1832’s emissions faded dramatically over six months, a phenomenon never observed before
  • Its behaviour doesn’t fit any known neutron star, pulsar or magnetar, leaving its true identity a cosmic puzzle
  • This discovery could transform our understanding of the most mysterious objects in the Universe

Astronomers have looked at countless stars with all kinds of telescopes and we’ve never seen one that acts this way. It’s thrilling to see a new type of behaviour for stars.

Dr Ziteng Wang

A wide field image of ASKAP J1832 in X-ray, radio, and infrared light. Credit: X-ray: NASA/CXC/ICRAR, Curtin Univ./Z. Wang et al.; Infrared: NASA/JPL/CalTech/IPAC; Radio: SARAO/MeerKAT; Image processing: NASA/CXC/SAO/N. Wolk

For the full story around this cosmic mystery read our in-depth feature about how astronomers have detected a strange radio and x-ray signal in deep space.

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