Red DwarfsA red dwarf is the smallest and coolest kind of star on the main sequence. Red dwarfs are by far the most common type of star in the Milky Way, at least in the neighborhood of the Sun, but because of their low luminosity, individual red dwarfs cannot be easily observed.https://en.wikipedia.org › wiki › Red_dwarf
Answer: No. Stars are born, live, and die. This process is called the "life cycle of a star".
Red dwarfs have the longest lifespan among white dwarfs, red dwarfs, and neutron stars. Well, this is because red dwarf stars are proven to be the longest-lasting main-sequence stars. They have a life span ranging into trillions of years.
Supergiants have the shortest lifespans of any star, as the temperatures in a supergiant's core get so high that it is able to fuse the helium that is left over after hydrogen burning has stopped. This helium burning process fuses helium atoms into carbon atoms, which then begin to build up at the center of the core.
The most massive stars in the Universe are also the shortest-lived. The more mass a star has, the more quickly it burns through its fuel reserves, resulting in lifespans that are less than around 10 million years.
Stars do explode, and when that happens they're known as supernovae. A supernova creates an explosion billions of times brighter than our sun, with enough energy to outshine its own galaxy for weeks. These massive explosions throw large amounts of matter out into space.
Most stars take millions of years to die. When a star like the Sun has burned all of its hydrogen fuel, it expands to become a red giant. This may be millions of kilometres across - big enough to swallow the planets Mercury and Venus.
A star's life expectancy depends on its mass. Generally, the more massive the star, the faster it burns up its fuel supply, and the shorter its life. The most massive stars can burn out and explode in a supernova after only a few million years of fusion.
Some will exhaust their available hydrogen within a few million years. On the other hand, the least massive stars that we know are so parsimonious in their fuel consumption that they can live to ages older than that of the universe itself--about 15 billion years.
After the star's outer layer has escaped, the much smaller inner layer collapses into a white dwarf. This star, which is hotter and brighter than the red giant it came from, illuminates and warms the escaped gas, until the gas starts glowing by itself – and we see a planetary nebula.
NASA estimates that the sun will stay a white dwarf for around 10 billion years. However, other estimates suggest stars can stay in this phase for 1015, or a quadrillion, years. Either way, the time required to reach this stage is longer than the current age of the universe, so none of these exotic objects exist—yet.
White dwarf formation
Instead, at the end of their lives, white dwarfs will explode in a violent supernova (opens in new tab), leaving behind a neutron star (opens in new tab) or black hole (opens in new tab).
Within a few days, however, the temperatures would begin to drop, and any humans left on the planet's surface would die soon after. Within two months, the ocean's surface would freeze over, but it would take another thousand years for our seas to freeze solid.
In order to save the Sun, to help it last longer than the 5 billion years it has remaining, we would need some way to stir up the Sun with a gigantic mixing spoon. To get that unburned hydrogen from the radiative and convective zones down into the core. One idea is that you could crash another star into the Sun.
Of course, no matter what happens, the birth of new stars must eventually cease, since there's a limited amount of hydrogen, helium, and other stuff that can undergo fusion. This means that all the stars will eventually burn out.
A star is born when matter condenses in a cloud of gas and dust. At a certain density, the temperature increases until it reaches the point at which nuclear reactions begin. That is when the star has formed. Jets of matter will appear perpendicular to the newly formed star, which will have a disk around it.
The universe contains all the energy and matter there is. Much of the observable matter in the universe takes the form of individual atoms of hydrogen, which is the simplest atomic element, made of only a proton and an electron (if the atom also contains a neutron, it is instead called deuterium).
The most massive stars live for a cosmically brief hundreds of millions of years. They live fast and die young. The smallest stars that are less than about 10% of the sun's mass have far less fuel to begin with; even so, they can eke out a living from their fuel supply for hundreds of billions of years.
The stars seem to twinkle in the night sky due to the effects of the Earth's atmosphere. When starlight enters the atmosphere, it is affected by winds in the atmosphere and areas with different temperatures and densities. This causes the light from the star to twinkle when seen from the ground.
The Milky Way is a large barred spiral galaxy. All the stars we see in the night sky are in our own Milky Way Galaxy. Our galaxy is called the Milky Way because it appears as a milky band of light in the sky when you see it in a really dark area.
As the cloud collapses, the material at the center begins to heat up. Known as a protostar, it is this hot core at the heart of the collapsing cloud that will one day become a star.
It still has about 5,000,000,000—five billion—years to go. When those five billion years are up, the Sun will become a red giant.