11ac1064_ions___Astronomy___Black_Holes__Question
[Date Answered] May 27, 1998 [Questioner (age, location)] Kaelyn (Oklahoma, USA) [Answer] The most massive star known is R136a1, a star 155 times as massive as our Sun. It is one of many extremely massive stars in a very young "super cluster", R136, in the 30 Doradus region of the Large Magellanic C loud. Black holes don't have names like the bright stars in our sky, such as Betelgeuse. We cannot detect black holes directly, but we can sometimes detect x-ray emission from the material surrounding them. This related x-ray source may be named. Cygnus X-1, for example, is the 1st x-ray source detected in Cygnus, and is probably a disk of gas and dust spiraling into a black hole. [Question] 
What is the name of the largest known star? Do black holes have names?
Quickie Questions - Astronomy - Black Holes