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What are The Stars?
The star is made of dust and gas in space.
Essentially it has many stages they are
1.black hole
2.nuetron star
3.supernova
4.red giant stage
Our solar system having a big star name sun which is attracting 8 other planets with its gravity.
It has an expected age of 10 billion years.
The average speed of a substance in a given interval of time is described as the ratio of the distance completed to the time taken while; average velocity is described as the ratio
what are the 15 major muscles in the body?
experiments on how sound waves travel faster in iron
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