Astronomersfrom McGill University in Canada and theIndian Institute of Science(IISc) in Bengaluru have used data from the Giant Metrewave Radio Telescope (GMRT) in Pune to detect a radio signal originating fromatomic hydrogenin an extremely distant galaxy.
The astronomical distance over which the signal was picked up is so far the farthest. This is also the first confirmed detection of strong lensing of 21 cm emission from a galaxy.