In 2018, astronomers recorded a mysterious signal from about 200 million light years away. At first, scientists thought they had discovered a supernova, but the characteristics of the object were still different.
The object was named “the Cow”. Recently, a team of scientists from the Massachusetts Institute of Technology discovered millions of high-energy X-ray pulses at the source, which appeared at regular intervals.
Researchers have calculated that this object is no more than 1000 kilometers across, and its mass is 800 times less than the mass of the Sun. This is not enough to be a full-fledged black hole. Most likely, the object is only at the nascent stage. There is a possibility that “the Cow” was a supernova, in which a neutron star is now being born.