Stars

Stars 

In this post, I’m going to give you some info about the types and classification of stars 

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Star- a huge ball of gas, a star combines hydrogen atoms to form helium, this is known as nuclear fusion, and the fusion causes energy to be released into heat.

Type	Surface Temperature(in Kelvin)	Color
O	30,000 and more	Violet-white
B	12,000-30,000	Blue-white
A	8,000-12,000	White
F	6,000-8,000	Yellow-white
G	5,000-6,000	Yellower-white
K	3,000-5,000	Orange
M	Less than 3,000	Red

Kinds of Stars 

Supergiant- large red (or blue) stars, that do not burn hydrogen in the core because all their core hydrogen has turned into helium from nuclear fusion, so they burn it in a region just outside its core, called a hydrogen-burning shell, when they die, they explode, called a supernova, these explosions cause black holes to form

Neutron Star- small stars that are only 6-12 miles across, but their mass is heavier than our Sun, they spin at high speeds, their gravity is powerful, (in order to escape it, you would have to reach 50% of the speed of light), one teaspoon of this star weighs 1 billion tons,  some of them emit radiation, called pulsars.

Brown Dwarf- a dull, tiny, star that causes nearby stars to wobble  

From left to right
Top Row: Supergiant, brown dwarf
Bottom Row: Neutron star
Source: NASA