Image: Images of four distant galaxies observed with the Arecibo radio telescope, which have been found to host huge reservoirs of atomic hydrogen gas.
Original Published Date: 
Wednesday, December 3, 2014

Using the world’s largest radio telescope, astronomers from Swinburne University of Technology have detected the faint signal emitted by atomic hydrogen gas in galaxies three billion light years from Earth, breaking the previous record distance by 500 million light years. ARC Future Fellow, Dr Barbara Catinella, and Research Associate, Dr Luca Cortese, used the 305-metre diameter Arecibo radio telescope in Puerto Rico to measure the hydrogen gas content of nearly 40 galaxies at distances up to three billion light years. They uncovered a population of very gas-rich systems, containing between 20 and 80 billion times the mass of the Sun in atomic gas. This research was supported under the ARC’s Future Fellowships and Discovery Projects funding schemes.

Media issued by Swinburne University of Technology

Photo credit: 

Image credit: Sloan Digital Sky Survey.