How is a star?
The stars formed from gas clouds that are in the universe. At first these clouds just rotate, but are reduced as along with hundreds of thousands of years, spin faster, globular shape flattens and central areas are a protostar. At the core, the density and temperature increase, the hydrogen into helium by nuclear reactions and the protostar becomes a star. The different temperatures of the stars determine their colors are red the coldest and hottest blue. Most stars are grouped in binary or multiple systems. The former are composed of two stars that revolve around the same gravity system and the latter are more individual components.
What kind of stars are red giants?
They are cool stars. Abundant in our galaxy but not easily seen by weak light. Can be accurately observed by telescopes.
What kind of stars are white dwarfs?
They are hot stars and a soft glow. They have the same amount of matter that the sun and similar in size to Earth.
How are neutron stars?
These stars are small and very dense. They are about 15 kilometers in diameter, but its mass is greater than that of the Sun
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