On a Hertzsprung-Russell diagram, where on the main sequence would we find stars that have the greatest mass? Naim 01:55 Astronomy Chapter 15 On a Hertzsprung-Russell diagram, where on the main sequence would we find stars that have the greatest mass? A) upper right B) lower right C) upper left D) lower left Answer: C Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+