Astronomers observe a star that quietly transformed into a black hole - KSL.com

1. Astronomers observe a star that quietly transformed into a black hole  KSL.com
2. Scientists Capture the Clearest View Yet of a Star Collapsing Into a Black Hole  Columbia University in the City of New York
3. Astronomers witness vanishing star collapse into a black hole in Andromeda galaxy  Space
4. Have astronomers witnessed the birth of a black hole?  NPR
5. Scientists get clearest view ever of star collapsing into a black hole. And they very nearly missed it  BBC Sky at Night Magazine