An international team of astronomers has precisely located one of the most-observed variable-star systems in the sky – a double-star system called SS Cygni – at 372 light-years away. Artist’s conception of the double-star system SS Cygni (David T Hardy) This new measurement of the distance to SS Cygni has finally allowed scientists to solve a decade-old puzzle, confirming understanding of the way exotic objects like black holes interact...
