Astronomers crack mystery of the "monster stars"

Theory suggests that stars can't form that are more massive than 150
solar masses. However, stars as massive as 300 solar masses have been
found in some star forming regions of the Large Magellanic Cloud. Was
star forming theory wrong, or is there another explanation for why these
stars are so much more massive?

Astronomers crack mystery of the "monster stars" - Astronomy Magazine
http://www.astronomy.com/~/link.aspx...6-b752cce7f98c