Who or what sent it?

Deep Space Signal Reaches Earth

Scientists are calling it an “astonishing discovery”; a deep radio signal reaching Earth after 8 billion years.

This fast radio burst is believed to be one of the most powerful signals to ever reach our planet.

This comes after 35 bursts believed to be a billion light-years away reached Earth last year.

Scientists don’t know who or what is sending this signal but theorize that it could show signs of alien life.

https://loudwire.com/deep-space-radio-signal-reaches-earth-aliens/