GENERAL KNOWLEDGE

Detailed explanation-1: -A star’s life cycle is determined by its mass. The larger its mass, the shorter its life cycle.

Detailed explanation-2: -So for a given star of a particular size, a natural balance is reached between the inward pull of gravity, set by the star’s mass, and the outward push of radiation, set by the process of nuclear fusion in the star’s core. In brief, a star’s size is predominantly set by its own mass.

Detailed explanation-3: -There are factors that will define how long a star will survive; how quickly they burn through the hydrogen fuel in their cores, and whether they have any way to keep the fuel in their core mixed up.

Detailed explanation-4: -Astronomers generally measure the size of stars in terms of the radius of our sun. For instance, Alpha Centauri A has a radius of 1.05 solar radii (the plural of radius). Stars range in size from neutron stars, which can be only 12 miles (20 kilometers) wide, to supergiants roughly 1, 000 times the diameter of the sun.