Astronomers from Max Planck Institute for Extraterrestrial Physics in Germany have observed a new outburst from SSS1, a luminous transient supersoft X-ray source in the nearby galaxy NGC 300. The newly detected event could shed more light on the nature of this mysterious transient. The finding is detailed in a paper published October 18 on arXiv.org.
Source:
https://phys.org/news/2019-10-outburst-luminous-supersoft-source-nearby.html