Good news

[sergepolar]

http://www.nature.com/nature/journal/vaop/ncurrent/full/nature13710.html

A 400-solar-mass black hole in the galaxy M82

http://news.sciencemag.org/space/2014/08/between-black-hole

P.S. Старая статья про ULX http://www.astronet.ru/db/msg/1202758