Jan 16, 2023

Astronomers just detected the furthest atomic hydrogen signal ever

Posted by in category: space

It is the most distant atomic hydrogen radio signal “by a large margin” and it could teach us a great deal about star formation.

Astronomers from McGill University in Canada and the Indian Institute of Science (IISc) in Bengaluru detected an atomic hydrogen radio signal originating 8.8 billion light-years from Earth.

As the statement points out, “this is also the first confirmed detection of strong lensing of 21 cm emission from a galaxy.”


This makes it the most distant atomic hydrogen radio signal ever observed, a press statement reveals. They pinpointed the signal — with the aid of gravitational lensing — in data from the Giant Metrewave Radio Telescope (GMRT) in Pune, India.

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