What stage does a star remain in for the longest?

1 Answer
Nov 18, 2015

The Stage in which it burns hydrogen to helium.

Explanation:

The Star remains the longest in the stage when it is burning Hydrogen into Helium. For our Sun this is called the main sequence stage which will last for about 4.5 Billion years more , this depends on how fast the star is burning up fuel. For more massive stars this stage lasts for a few hundred million years. That's why there are very few massive stars fund in Elliptical galaxies where massive stars are only formed in the beginning period of the galaxy. In Elliptical galaxies you will only find some main sequence stars and an abundance of Red Dwarfs, stars that have a lifespan of a Trillion years.