why do you think massive star has shorter lifespan than average star ?

-why do you think massive star has shorter lifespan than average star ?
-Stars are born, live, and die. But why do some stars have a shorter lifespan than others?
-Scientists have long been puzzled by the fact that massive stars tend to have shorter lifespans than average-sized stars.
– Some scientists believe that the answer may lie in the way that massive stars burn fuel. Because they are larger, they consume fuel more quickly, which causes them to die sooner.

why do you think massive star has shorter lifespan than average star ?


The mass of a star is the best predictor of how long it will live. In general, the more massive a star is, the quicker it depletes its fuel supply, which results in a shorter lifespan for the star. After just a few million years of fusion, the most massive stars may run out of fuel and blow themselves apart in the form of a supernova. On the other hand, a star with the same mass as the Sun can maintain its ability to fuse hydrogen for another about 10 billion years. And if the star is really tiny, with a mass that is just a tenth of that of the Sun, then it can continue to fuse hydrogen for up to a trillion years, which is longer than the age of the universe at the present time. Now we get to the important question: what causes stars to explode?


The mass of a star is another factor that must be considered while attempting to answer the question “How do stars die?” Core-collapse supernovae are some of the most powerful explosions in the cosmos, and they are triggered when the most massive stars run out of fuel and then collapse in on themselves to form a core. The energy emitted by a supernova has the potential to greatly outshine the remainder of its host galaxy, even if only temporarily. Depending on the amount of material that is left, the leftover stellar core will eventually create either a neutron star or a black hole. If the core contains between 1.44 and 3 solar masses, then that mass will compress into a volume that is just 10 to 15 miles across before a mechanism known as neutron degeneracy pressure stops the core from completely collapsing. The precise maximum limit on the mass of a neutron star is unknown, but when it reaches around three solar masses, not even the pressure caused by neutron degeneracy can stop the inward compression caused by gravity, and the core eventually collapses to become a black hole.

Are you intrigued by black holes? Simply enter your your address below to get a free copy of our ebook, “Black Holes.” You will also be subscribed to our monthly e-newsletter, which will provide you with the most recent information about astronomy.

The destiny of average stars, or stars with masses up to 1.44 times that of the Sun, like our Sun, is only little less bizarre. As their cores run out of hydrogen to fuse, these stars undergo a process that causes them to grow into red giants and then lose their outer layers. A white dwarf star is what’s left behind in these planetary nebulae after everything else has gone. White dwarfs, much like neutron stars, are incapable of fusing hydrogen into helium and instead rely on the degeneracy pressure for their continued existence. However, in the case of white dwarfs, it is the electrons that are degenerate and are the ones that are packed together and forced into higher energy states.

White dwarfs will ultimately transform into black dwarfs if they are left to their own devices. Due to the fact that it takes a white dwarf longer than the age of the universe for it to completely fade away, black dwarfs have not been seen yet. If the white dwarf is a component of a binary system, though, it has a chance of avoiding that particular destiny entirely. The white dwarf may explode in a type Ia supernova without leaving any remnants behind if it accretes materials from its partner star before the explosion.

Even the most little stars in the cosmos have very lengthy lifetimes; in fact, none of them have even come close to reaching their conclusion. Red dwarfs are stars that have less than 0.4 times the mass of the sun and burn at such a low rate that they have the potential to survive for 100 billion years, which is much longer than the age of the universe at this moment.

Sky Atlas 2000.0 Deluxe Laminated is the ultimate star atlas that allows you to explore single, multiple, and variable stars. It is the star atlas that all other star atlases are judged against.

A massive star has a shorter life span than an average star because of faster hydrogen fuel consumption by a massive starA massive star has a shorter life span than an average star because of faster hydrogen fuel consumption by a massive star. 

Massive stars have shorter lifetimes than ordinary tiny stars do because, although having more hydrogen for nuclear reactions, they use their fuel at a considerably quicker speed due of their extremely big size. This results in massive stars running out of fuel far sooner than common small stars.
The most powerful stars have ten to one hundred times the mass of the sun, but their luminosity is one million times more. As a result, they use their fuel one thousand times more quickly, and as a result, they only live for one million years or fewer.
On the other hand, the tiniest stars, which have a mass that is less than that of the Sun, have the potential to survive for hundreds of billions of years longer than the Sun itself.

See more articles in category: Wiki