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a red giant

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White Dwarf

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Q: What is the phase that occurs after a main sequence star?
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Is it true that an average star spends 90 percent of its life as a helium burning main sequence star?

no, as a hydrogen burning main sequence star.


What star has a temperature in the 3000 degrees?

It is a main sequence star of class M. It can range in size form 0.08 to 0.45 solar masses, and a radius of less than 0.7 times that of the sun. A majority (76%) of main sequence stars belong to this category.


What is the name of the middle aged star?

The name for a middle-aged stable star is a "Main Sequence Star" FROM TERI EMMA AND JASMINE. partly olivia. in her mind. :) kngs. in ict1 (physics.) ;)


How long do main sequence stars live?

A main sequence star is a star that is fusing hydrogen in its core. Stars leave the main sequence when they run out of hydrogen and start to fuse heavier elements (starting with helium and finishing with iron). The length of time a star remains on the main sequence depends on how massive the star is. The larger the star the more gravity it has and the tighter this gravity squeezes the core - this makes the core hotter and brings the hydrogen atoms closer together so the fusion process proceeds more rapidly. Thus big stars will only spend a few tens of millions of years on the main sequence while stars the size of our sun will spend ten thousand million years on the main sequence, and smaller stars (red dwarf stars) will spend trillions of years fusing hydrogen.


Why is the hr diagram important to scientist?

The main reason that the HR Diagram is so useful and important to scientists is, you can tell the size of the star by plotting it on the HR Diagram. The different sizes of stars form a pattern on the HR diagram.

Related questions

What does it mean when a star goes off the main sequence?

When a star "goes off the main-sequence" it generally means the star has run out of hydrogen fuel and is beginning the post-main-sequence or its end of life phase. The main sequence of a star is the time where it is no longer just a proto-star but is burning hydrogen as a primary source of fuel.


When does a star become a main sequence star?

When the protostar accumulates enough mass and the pressure in the core reaches 10 millions degrees Kelvin. then hydrogen fusion can start and the star starts its main sequence phase.


What is the main sequence phase of a star?

The main sequence phase means that, if you plot an H-R (Hertzsprung-Russel) diagram, it is in the so-called "main sequence", the area in the graph where you find the majority of stars. Those are the stars that currently fuse hydrogen into helium.


What is the longest phase of a star?

Main Sequence .....Have fun with the rest of Study Island Suckers :D


What is the name for the portion of a star's life cycle when it uses hydrogen for fuel?

When a star is in the Hydrogen burning phase it said to be a Main Sequence star.


Which type of nebulae formation occurs after a main sequence star casts of its outer layers?

planetary


When does the main sequence star phase of a star end?

The "main sequence" is the region (on the HR diagram) for stars which burn hydrogen-1. Once stars use up most of their hydrogen-1 (and have significant amounts of helium-4), they leave the main sequence.


What occurs that causes a main sequence star to lose its equilibrium and move on to the next stage in its evolution?

This happens when a main sequence star uses up all of its fuel and swells. Next stage: Red Giant.


At what stage in star development does a star spend most of its life?

A Star spends most of its life on the "main sequence" of the Hertzsprung-Russell diagram (see related link below). While here it is called a "main sequence" star and its source of energy during this phase of its life is the fusion of hydrogen into helium in its core.


When does pro-to star become a star?

I actually thought that would be when the star starts fusing hydrogen into helium... But apparently there are other stages between those two.According to Wikipedia, "[The protostar phase] ends when the protostar blows back the infalling gas and is revealed as an optically visible pre-main-sequence star, which later contracts to become a main sequence star."Pre-main sequence means the star is not yet on the main sequence; and that, in turn, basically means that it is not yet fusing hydrogen into helium.


Is a red giant star considered to be a main sequence star?

No. Red giants are not on the main sequence.


Does a red main sequence star have fusion?

A red main sequence star would be a red dwarf or a branch red giant. To be on the main sequence, you have to have hydrogen nuclear fusion.