In main sequence stage how is energy generated in a star's core?

Answer 1

By fusing Hydrogen to Helium and these elements into heavier ones.

In the cores of lower mass main sequence stars such as the Sun, the dominant process is the proton-proton chain reaction (pp-chain reaction). This creates a helium-4 nucleus through a sequence of chain reactions that begin with the fusion of two protons to form a nucleus of deuterium. The subsequent process of deuterium burning will consume any pre-existing deuterium found at the core. The pp-chain reaction cycle is relatively insensitive to temperature, so this hydrogen burning process can occur in up to a third of the star's radius and occupy half the star's mass. As a result, for stars above 35% of the Sun's mass, the energy flux toward the surface is sufficiently low that the core region remains a radiative zone, rather than becoming convective. In each complete fusion cycle, the p-p chain reaction releases about 26.2 MeV.

Answer 2

Nuclear fusion. The fusing or joining of two atomic nuclei to form heavier ones. In a main sequence star, this is generally hydrogen nuclei (protons) joining to eventually form helium nuclei, through a series of steps. The overall mass of the end (and intermediate) result(s) is lower than the starting components, mass is converted to energy through the fusion process, as per E = mc2.

Answer 3

Main sequence stars produce energy by fusing hydrogen into helium in their cores.

Answer 4

by nuclear fusion, converting hydrogen to helium in its core....

Answer 5

All stars produce energy by fusing hydrogen atoms in their core

Answer 6

Stars get their energy from nuclear fusion; in a main-sequence star, mainly, hydrogen-1 is fused into helium-4.