If a star is small, it will remain in the main sequence <u>longer than</u> a large star
Explanation:
Both large and small stars are the result of a huge collection of gases (primarily hydrogen and helium) that also constitute the main sources of their fuel. Now, the main difference between these two masses of stars is the speed in which such fuel is burned or fused. A small star's life will last longer because it burns these gases at a slower rate than a large star's. This is so because the pressure and temperature in a large star's core are way bigger and it will tend to collapse faster than a small star.
