Kepler's Supernova Remnants
X-ray: NASA/CXC/NCSU/M.Burkey et al; Infrared: NASA/JPL-Caltech
German scholar Johannes Kepler is credited with the first observations of the Supernova of 1604. The explosion was so bright, and so close, people on earth could see it with a naked eye.
Hundreds of years after the initial discovery, the origin of the Kepler Supernova is highly-studied - and often-debated. But NASA recently released new findings, stating the Kepler supernova was triggered by an interaction between a white dwarf and a red giant star.