Spiral Galaxy NGC 4921 (image) International Centre for Radio Astronomy Research Share Print E-Mail Caption This artist's impression shows the spiral galaxy NGC 4921 based on observations made by the Hubble Space Telescope. Credit Credit: ICRAR, NASA, ESA, the Hubble Heritage Team (STScI/AURA) Usage Restrictions Attribution. Share Print E-Mail 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.