
A pair of rare, compact white dwarf stars that are set to collide in about 23 billion years have been spotted by researchers at the University of Warwick. After converging, the binary star system will explode into a Type 1a supernova. Scientists have long predicted that two orbiting white dwarf stars are responsible for creating Type 1a supernovas, but this discovery marks the first time such a star system headed down that path has been observed.