... Tonight's Sky . ... Stellar cannibalism' is key to formation of overweight stars . Researchers discovered a connection between the total mass contained in the core of a globular cluster and the number of blue stragglers observed within it. ... Researchers have discovered that the mysterious overweight stars known as blue stragglers are the result of 'stellar cannibalism' where plasma is gradually pulled from one star to another to form a massive, unusually hot star that appears younger than it is. ...