Remnants of a Supernova in the Constellation Cassiopeia, Cas A (image) Technical University of Munich (TUM) Share Print E-Mail Caption In fossil remnants of so-called magnetotactic bacteria researchers at the Technische Universitaet Muenchen have found the iron isotope Fe-60. Because it is almost exclusively produced in supernovae like Cas A this is a first biological evidence of a supernova in our cosmic neighborhood. Credit Composite Image: X-ray: NASA/CXC/SAO; Optical: NASA/STScI; Infrared: NASA/JPL-Caltech/Steward/O.Krause et al. Usage Restrictions None 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.