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Types of stars 

Not all stars are same. Each type of star has its own behaviour. There are 7 types of star according to electromagnetic spectrum as all stars has different color in appearance. They are as shown below:-

O type :- These type of stars are hottest and blue in color. Their temperature is above 30,000 K. These type of stars use their fuel so quickly that their lifespan is short as millions of years. 
 
B type :- These type of stars are second hottest one and are light blue in color. Ther temperature is from 10,000 to 30,000 K. These type of stars also live for millions of years.

A type :- These type of stars are third hottest one and they are white in color. Their temperature is from 7,500 to 10,00 K.These type of stars live for approx 50 to 100 millions of years

F type :- These type of stars are golden in color and they are slightly more hot than the our Sun. Their temperature is from 5,000 to 6,000 K. These type of stars live for billions of years.

G type :- These type of stars are yellow in color and our Sun come in this type. Their temperature is from 5,000 to 6,000 K. These type of stars live for approx 10 billions of years.

K type :-  These type of stars are orange in color and dimmer than our Sun. Their temperature is from 3,500 to 5,000 K. These type of stars live for approx 100 billions years.

M type :- These type of stars are red in color and they are dimmest and coldest one. Their temperature is below 3,500 K. These type of stars live for trillions of years. They are most common in this Universe where we live.



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