'Missing link' black hole lurks in strange binary system with red giant star 

 Astronomers have discovered a "missing link:" a tiny black hole lurking with a red giant star in a strange and difficult-to-explain binary system. 

https://cdn.mos.cms.futurecdn.net/hZtLZkLrL97bG8v5e5TEbA.png

https://www.space.com/black-hole-missing-link-red-dwarf-star-strange-binary