How long does the protostellar stage last for a star like our Sun? Naim 13:08 Astronomy Chapter 6 How long does the protostellar stage last for a star like our Sun? A) 1 million years B) 3 million years C) 10 million years D) 30 million years E) 100 million years Answer: D Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+