After 400 Years Debris From This Supernova Is Still Not Slowing Down – ScienceAlert

In 1604, a white dwarf star went supernova. This is quite normal behaviour for a white dwarf star; but this one, at a distance of just 20,000 light-years from Earth, was visible to the naked eye, and… [read more]

Leave a Reply

Your email address will not be published. Required fields are marked *