Space / 2014-02-19
The Case of Missing Iron in Cassiopeia A
NASA's image library records The Case of Missing Iron in Cassiopeia A.
When astronomers first looked at images of a supernova remnant called Cassiopeia A, captured by NASA NuSTAR. The mystery of Cassiopeia A Cas A, a massive star that exploded in a supernova more than 11,000 years ago continues to confound scientists.
A CLOSER LOOK
When astronomers first looked at images of a supernova remnant called Cassiopeia A, captured by NASA NuSTAR. The mystery of Cassiopeia A Cas A, a massive star that exploded in a supernova more than 11,000 years ago continues to confound scientists.
Explore NASA's original image record for credits and available downloads.
FOLLOW THE EVIDENCE
NASA Image and Video LibraryThe Case of Missing Iron in Cassiopeia AOriginal explanation based on the sources above. Images carry their own reuse terms.