'Blue Whale of Space' (IMAGE) CSIRO Australia Caption This is a composite image showing the size of the radio glow from the galaxy Centaurus A in comparison to the full Moon. The white dots in the sky represent not stars but background radio sources -- galaxies like Centaurus A in the distant universe. The foreground antennas are of CSIRO's Australia Telescope Compact Array, which gathered the data for the Centaurus A image. Credit Image credit – Ilana Feain, Tim Cornwell & Ron Ekers (CSIRO/ATNF). ATCA northern middle lobe pointing courtesy R. Morganti (ASTRON), Parkes data courtesy N. Junkes (MPIfR). Photo of the ATCA and Moon: Shaun Amy, CSIRO. Usage Restrictions Please credit: Ilana Feain, Tim Cornwell & Ron Ekers (CSIRO/ATNF). ATCA northern middle lobe pointing courtesy R. Morganti (ASTRON), Parkes data courtesy N. Junkes (MPIfR). Photo of the ATCA and Moon: Shaun Amy, CSIRO. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.