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What are the remains of a star that has no fuel but glows faintly?
The remains of a star that has no fuel but still glows faintly are called white dwarfs. White dwarfs are very dense, Earth-sized objects that are formed when a low to medium mass star exhausts its nuclear fuel and sheds its outer layers. The residual heat from the white dwarf's formation causes it to glow faintly for billions of years.
What is an old very dense hot star that is cooling called?
An old, very dense, hot star that is cooling is called a white dwarf. These stars are the remnants of medium-sized stars that have exhausted their nuclear fuel and shed their outer layers. Over time, they gradually cool and fade, eventually becoming faint stellar remnants known as black dwarfs, though the universe is not old enough for any black dwarfs to exist yet. White dwarfs are primarily composed of electron-degenerate matter, which accounts for their high density.
Why are there no white dwarfs among the 100 brightest stars?
White dwarfs have very small surface areas compared to main sequence stars and therefore cannot emit as much light.
What is the life expectancy of the cool red dwarf star?
It depends. The lower the mass of the star, the longer the lifespan. It is believed that the lifespan of these stars exceeds the expected 10 billion year lifespan of our Sun by the third or fourth power of the ratio of their masses to the solar mass, which means a red dwarf with 0.1 solar mass may continue burning for 10 trillion years
Do astronomers believe in black dwarfs?
Black Dwarfs are still theoretical bodies in the Universe. Belief and scientific observations are two different things. In theory, they will exist, but until one is observed, there existence can not be confirmed. See related question
Very small stars that are usually old and running out fuel are called?
Those are dwarf stars, which start out as white dwarfs and as they (very slowly) cool, become red dwarfs and eventually brown dwarfs.
What can cause slow aceleration in a 96 accord?
very bad fuel filter
How to use water as a fuel for cars without the help of petrol diesel etc?
Impossible. Water itself is not a fuel and will not burn so therefore it cannot be used as a fuel for an automobile. If you figure out how to burn water you will be a very rich person.
What lights the fuel in a diesel engine?
Diesel fuel is ignited by a combination of heat and compression. The heat is caused by the very high compression in the cylinder. The fuel also has to be very finely atomised to be able to burn.
Can you burn banana peels in a wood stove as fuel?
Yes: when dry ,they have a very flammable oil
You jog everyday 3 miles very slowly. Will you burn your body fat jogging very slowly or will you get any benefit from it?
You will burn between 200 and 300 calories by jogging 3 miles at a slow pace.
What are the remains of a star that has no fuel but glows faintly?
The remains of a star that has no fuel but still glows faintly are called white dwarfs. White dwarfs are very dense, Earth-sized objects that are formed when a low to medium mass star exhausts its nuclear fuel and sheds its outer layers. The residual heat from the white dwarf's formation causes it to glow faintly for billions of years.
Do stars burn forever?
No. They eventually run out of fuel and die, though this takes a very long time.
Are red dwarfs bright?
Red dwarfs are not bright because they are not very luminous, they don't emit a lot of light.
Is it bad for your car if you wait for low fuel light to come on before getting gas?
This may be bad The fuel pump is cooled and lubricated by the fuel and any time it gets even a tiny amount of air in it it will wear and burn out very very quickly. This is very likely if the low fuel light is on.
What is the mpg on the Citation ISP?
Very roughly 2.2 mpg based on specified fuel burn and cruse speed
Which star has the longest lifetime?
The stars that have the longest lifetimes are the smaller, cooler stars - red dwarfs. They are just about massive enough to sustain nuclear fusion of hydrogen fuel, but consume fuel at a very low rate. They could last for hundreds of billions of years before they exhaust their fuel.
