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Before i was born, gasses were pulled together to form a nebula. As it started to condense under its own gravity it formed a large ball.
Once my hydrogen started to fuse and form helium i was born. I then start to release energy and shine.
At this point i am an adult star, a main sequence star on the Hertzsprung-Russell (HR) diagram. The HR scale shows luminosity and temperature. I am located in the middle right now.
As I have gotten older and bigger, I have been fusing helium into carbon. Now that I am a Red Giant my outer layers are cooler but my core is even hotter.
As my helium core ran out, my outer layers started to drift away. These gasses that surround me are a planetary nebula.
Now that I am old, I lost 20% of my body and feel weak. I feel my core starting to cool and dim. I realize that I am a white dwarf now, but once I loose my luminosity I will become a black dwarf and die!
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