Question

Name the force which plays key role in the formation and evolution of stars and galaxies.

Answer 1

Answer:

there are four forces of nature. two are familiar to everyone ; two are less so. first, gravity is the force that pulls us to the surface of the earth, keeps the planets in orbit around the sun and the causes the formation of planets, stars and galaxies.

Answer 2

$\huge\text{\underline{Answer}}$

$\bold{Gravitational Force }$

The Gravitational force is the force which plays an important key role in the formation of stars and galaxies.

Stars and galaxies are made up of gases,dusts and some other elements which are collected at a place after millions of years the pressure or gravitational force is so large that they are compressed towards centre due to the attraction force of gravity.

The collision of gases particles under high pressure or temperature increases the kinetic energy and they fuse to become a heavier nuclei which release the tremendous amount of energy in the form of heat and light.

Gravitational force is an attraction force which acts on every body in this universe.

It is given by newtons gravitational law.

$\boxed{f = G \frac{m1 \times m2}{ {r}^{2} } }$

where G is a universal gravitational constant.

M is masses of the objects.

R is distance between them.

F is gravitational force.