Scientists in Canada detected an 8 billion-year-old radio signal in a distant galaxy

Scientists have detected a record-breaking radio signal from atomic hydrogen in a very distant galaxy. The galaxy that the signal originated from is believed to have come from a galaxy at redshift z=1.29. Because of the galaxy’s immense distance, the emission line had shifted to a 48 cm line from the 21 cm line they had expected.
This discovery is phenomenal because the galaxy that it originated from is believed to have existed when the universe was only 4.9 billion years old – making the source of the record-breaking radio signal 8.8 billion years old.
Scientists in Canada detected an 8 billion-year-old radio signal in a distant galaxy