Stars form when dense portions of interstellar medium condense due to gravity.
The collapsing cloud of dust and gas forms a large, hot core that develops into a main sequence star. As these stars decay, they expand, and their later fate depends on the star's original mass.
... depiction of the life cycle of a Sun-like star, starting as a main-sequence star at
lower left then expanding through the subgiant and giant phases, until its outer
envelope is expelled to form ...
THE LIFE CYCLE OF A STAR. Outlined below are the many steps involved in a
stars evolution, from its formation in a nebula, to its death as a white dwarf or ...
Stars are formed in clouds of gas and dust, known as nebulae. Nuclear reactions
at the centre (or core) of stars provides enough energy to make them shine ...
www.ask.com/youtube?q=Life Cycle of a Star&v=PM9CQDlQI0A
Nov 1, 2012 ... Explains how we believe stars are born, live and die and the different ends to
different sized stars. Learn even more on Teaching Astronomy on ...
This page (as the title says) is all about the life of a star. It will show all the stages
that a small star, and a massive star have to go through during their lifetime.
May 7, 2015 ... A star's life cycle is determined by its mass. The larger its mass, the shorter its life
cycle. A star's mass is determined by the amount of matter that ...
The Life Cycles of Stars. I. Star Birth and Life. Imagine an enormous cloud of gas
and dust many light-years across. Gravity, as it always does, tries to pull the ...
A series of lessons and interactive activities designed to teach about stellar
evolution, star classifications, and fusion.
THE LIFE CYCLE OF STARS. Stars are born in nebulae. Huge clouds of dust and
gas collapse under gravitational forces, forming protostars. These young stars ...