Mysterious radio waves emanating from the center of the galaxy have astronomers stumped.
Four objects have briefly emitted radio signals that don't resemble any known type of star.
Scientists think each of the four signals could come from a new type of object unknown to astronomy.
Ziteng Wang found a needle in an astronomical haystack.
Wang, a physics PhD student at the University of Sydney, was combing through data from Australia's ASKAP radio telescope in late 2020. His research team had detected 2 million objects with the telescope and was classifying each one.
The computer identified most of the stars, and the stage of life or death they were in. It picked out telltale signs of a pulsar (a rapidly rotating dead star), for example, or a supernova explosion. But one object in the center of our galaxy stumped the computer and the researchers.
The object emitted powerful radio waves throughout 2020 — six signals over nine months. Its irregular pattern and polarized radio emissions didn't look like anything the researchers had seen before.
Even stranger, they couldn't find the object in X-ray, visible, or infrared light. They lost the radio signal, too, despite listening for months with two different radio telescopes.
It reappeared suddenly, about a year after they first detected it, but within a day, it was gone again. READ MORE...
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