In the HR-diagram, a diagram of color vs. luminosity, most stars are concentrated close to one curve, called the "main sequence". It turns out that stars on the main sequence are the stars that mainly get their energy by converting hydrogen into helium.
There are billions of stars that are not on the main sequence.
Understand that the Main Sequence is not a place or a category that a star belongs to all its life. A star's destiny is controlled by its size and this determines how much time it spends on the Main Sequence.
Of the stars you can see from Earth, 90% are in the main sequence.
The smallest stars in the main sequence are the stars with cooler surface temperatures.
"main sequence" is the tern.
Most of the stars in the universe are found on the main sequence. Stars fall off the main sequence when they begin to die.
main sequence stars , our sun is also a main sequence star
About 90% of the observed stars are on the main sequence. See related question
main sequence stars , our sun is also a main sequence star
Main sequence stars include the hottest stars as well as the coolest ones.
No. They have the lowest temperatures on the main sequence. The hottest main sequence stars are blue.
Main sequence stars are found in all galaxies.