First Future Type 1a Supernova Detected: White Dwarf Pair to Collide in 23 Billion Years https://ift.tt/v64knxq First Future Type 1a Supernova Detected: White Dwarf Pair to Collide in 23 Billion Years Two pair of compact white dwarf stars were located around 150 light-years from Earth. They have been identified by a group of astronomers . The two stars are orbiting each other. They are believed to be on course to eventually merge together. The collision is expected to take place in roughly 23 billion years. A Type 1a supernova is likely to result from this merger. This is the first t…