Life Cycle of a Star – Birth through to Death The life cycle of a star is an amazing scientific phenomenon that takes billions and billions of years to occur and involves several stages each with its own interesting characteristics. Before we delve deeply into the various process involved in the creation of a star, let us first try to define what a star actually is. A start is a luminous globe of gas that is capable of producing its own heat and light through nuclear fusion. It is created from a nebula, which is a cloud of hydrogen and helium gas as well as dust existing in space. The life cycle of a star begins with the nebula. It is known as the birthplace of stars, the nebula is known to have several kinds. Basically, stars are formed from the gases that are contained within the nebula. These clouds of gases – hydrogen and helium – and dust collapse due to gravitational forces resulting to the formation of protostars. Protostars which are known as young stars eventually collapse in order to form main sequence stars or also called dwarf stars. A red dwarf star is small and faint approximately tenth of the diameter of the Sun. These burn slowly and live to about a hundred billion years. These would eventually expand as they begin to grow old; as time goes on; its core runs of hydrogen and helium gases. This results in the cooling of the star and a decrease in its brightness, this star is now known as the red giant. The red giant or can also be called the red super giant is a large bright star that has a cooler surface temperature – 2,000 to 3,000 o C. They are considered
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Transcript
Life Cycle of a Star – Birth through to Death The life cycle of a star is an amazing scientific phenomenon that takes
billions and billions of years to occur and involves several stages each with its
own interesting characteristics. Before we delve deeply into the various process
involved in the creation of a star, let us first try to define what a star actually is. A
start is a luminous globe of gas that is capable of producing its own heat and light
through nuclear fusion. It is created from a nebula, which is a cloud of hydrogen
and helium gas as well as dust existing in space.
The life cycle of a star
begins with the nebula. It is
known as the birthplace of
stars, the nebula is known to
have several kinds. Basically,
stars are formed from the gases
that are contained within the
nebula. These clouds of gases
– hydrogen and helium – and
dust collapse due to
gravitational forces resulting to the formation of protostars.
Protostars which are known as young stars eventually collapse in order to
form main sequence stars or also called dwarf stars. A red dwarf star is small and
faint approximately tenth of the diameter of the Sun. These burn slowly and live to
about a hundred billion years.
These would eventually expand as they begin to grow old; as time goes on;
its core runs of hydrogen and helium gases. This results in the cooling of the star
and a decrease in its brightness, this star is now known as the red giant.
The red giant or can also be called the red super giant is a large bright star
that has a cooler surface temperature – 2,000 to 3,000oC. They are considered