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How Do Stars Form in Space? chelti

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guildford public

on 19 November 2013

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Transcript of How Do Stars Form in Space? chelti

How Do Stars Form in Space?
By Chelti Dane M.

The Stages of a Star-Stage 1
There are 9 stages in a star's life. with this guide, you will experience the excitement of how a star grows up.
The 1st stage is when the star is born.They are born in an area of high thickness
Nebula,
and reduces into a huge drop of gas, dust and contracts under its own gravity.I think that the star is born in this area is because the thickness of
Nebula
helps it to grow.

Next, an area of contracting material will begin to heat up and start to glow forming
Protostars
. If a
protostar
has enough material, the central temperature reaches 15,000,000 Degrees Celsius. Wow! if you wre in front of the star, you would melt to your bones!
At this temperature, nuclear reactions in which hydrogen fuses to form helium can start.

Stage 4/5
The next stage is when the star initiates to release energy, stopping it from constricting even more and causes it to shine. Now, it is called a
Main Sequence
star.
Now,the star of 1 solar figure remains in main sequence for about 10 billion years, until all of the hydrogen has fused to form helium.
Stage 6 is when the helium core starts to contract further. Reactions begin to occur in a shell around the core.
After that, the core will be hot enough for the helium to fuse to form carbon. The outer layers begin to expand and shine less brightly. the expanding star is now called a
Red Giant
.
Now, the helium core runs out, and the outer layers drift away from the core as a vapourous shell: this gas that surronds the core is called a
Planetary Nebula
.
Introduction
What are stars consist of? Stars are composed of hydrogen and helium. the nearest star in our solar system is the Sun. But what causes the Sun to be scorching hot? Well,the Sun is receiving a whopping amount of hydrogen, similar to a hydrogen bomb.
Stage 2/3
Stage 6/7/8
Final Stages
The remaining core is now in its final stages. When the core becomes a
White Dwarf
, the shell eventually cools and dims. When it stops shining, the dead star is now called a
Black Dwarf
.

This cycle continues, which means it doesn't stop. if someone asks you this question, you won't have any trouble answering it.
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