Life Cycle of a Star
Introduction
What is a star?
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its life stage a star can also contain proportion of degenerate matter. This article will tell you how a star can turn from a nebula to a Black hole, or pulsar. There are two ways for a star to live after it explodes as a supernova. A small star will turn into a Cepheid star. A bigger star will turn into a pulsar. An even bigger will turn into a black hole. Types of This is a Red Dwarf. It is close to Stars The sun the end of its life stage. Soon it measures about will explode and turn into a Cepheid. In our 865,000 miles universe there across. More are than 500 Earths. Some super giants measure 250,000,000 miles across. The color of a black star tells us white Which star is biggest? dwarf Red Dwarf 4% about it’s 4% surface Yellow star Red Dwarf 17% Yellow star five temperature. Green star Blue star Green star 50% Blue star types of stars; Blue stars are 25% black white dwarf Small Red hot and red stars Dwarfs, are cooler. Medium Yellow Yellow stars are Stars, Giant in the middle. Stars, Super Giant Stars, and Blue Giants.
Color, Size, Shape, and temperature. Explosion Massive stars explode when they come to the end of their life stage. They swell up into huge super giants and explode as supernovae. The closest supernovae to us is 67 light years away.They are the most intense explosions in our galaxy. Supernovae are as bright as thousands of Suns put together. 8 year old Ella Kosowicz wonders why they are called This is a supernova which exploded 300 super “novae” since they are not light years from Earth. It is one of the new. most intense explosions in the universe.
Black Holes After a star explodes as a supernova, all that’s left is a tiny area of space. It has infinity gravity. The area is called a black hole because even light cannot escape. Black holes are the most powerful things in our universe. They give the light they store to quasars. That is why quasars are the
This picture shows an artists version brightest things in our universe. of a black hole. Pulsars Beep. Beep. What is it? That is the same question astronomers at NASA are trying to figure out. It is a signal coming from outer space. At NASA astronomers thought it was an alien.
40 years later we know it as a pulsar. A supernova that exploded and instead of
20 18 16 14 which stars are most likely 12 to end their lives as 10 pulsars? 8 6 4 2 0 red yellow green blue orange Dwarfs stars stars stars stars
turning into a black hole, it turned into a pulsar. A smaller star that explodes as a supernova ends its life as a pulsar. It pulsates out waves of energy. On Earth we see them as light when it sweeps past us. continually shrinks and This is a photo of a Cepheid Cepheid Star expands losing outer layers of star which is 1.34 light years material. Then the star begins away. After a star turns into a to lose color and fade. Red Giant, the helium left over begins to fuse with itself to form carbon. The star is now called a Cepheid star, and
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0 cepheid star pulsar black hole Fun Facts about stars
Since it takes Black Dwarfs so long to form, there are none of them in our universe yet. Stars twinkle because as their light reaches the atmosphere, it bends. Quasars look like Black Dwarf. stars, but they are not. They get their light from Black Holes. Stars do not last for ever.
The End.
By: Sasha Baysara