No. 35: Sep-Oct 1984
Astrophysicists have long believed that the upper limit for stellar masses was 100 times that of the sun. This rule seems to be violated right on our doorstep -- in the Large Cloud of Magellan. The nonconforming object is designated R136; and it resides in the southern constellation Doradus. The central part of R136 radiates about a million times more visible light than our sun, and 50 million times more if the ultraviolet wavelengths are included. If R136 is a single object, its mass may be 1,000 times that of the sun.
(Mathis, John S., et al; "A Superluminous Object in the Large Cloud of Magellan," Scientific American, 251:52, August 1984.)