During stellar evolution[1], a star generally grows bigger in size, and as it grows bigger, its temperature reduces. This process is quite similar to a thermodynamic expansion of an ideal gas. A star forms due to mutual gravitational attraction of particles in a gas cloud. The end state of a star depends on its mass.Also know, why does a star grow bigger?
All are born in clouds of gas and dust, but the more massive a baby star, the earlier nuclear fusion ignites in its core. And the radiation pressure produced here should really purge its surroundings and thus prevent the infall of matter which will allow the star to grow bigger.
Also, why do stars on the main sequence get brighter as they get bigger? Main sequence stars provide their energy by fusing hydrogen atoms together to produce helium. The more massive a star is, the more energy it requires to counteract its own gravity. Stars more massive than the Sun not only burn out more quickly, but they burn much hotter and brighter.
Regarding this, why does a star grow larger after it exhausts?
Hydrogen fusion in a shell outside the core generates enough thermal pressure to push the upper layers outward. the expanding shell of gas that is no longer gravitationally held to the remnant of a low-mass star.
Do stars grow or shrink?
Medium stars In medium size stars, after the nuclear fusion has used up all the fuel it has, gravity will pull the remaining material closer together. The star will shrink. In fact, it may get to be only a few hundred kilometers wide! The star is then called a "white dwarf".
Which type of star is the brightest?
Sirius A and B. The brightest star in the sky is Sirius, also known as the “Dog Star” or, more officially, Alpha Canis Majoris, for its position in the constellation Canis Major. Sirius is a binary star dominated by a luminous main sequence star, Sirius A, with an apparent magnitude of -1.46.What happens when a star gets too big?
If the star is large enough, it can go through a series of less-efficient nuclear reactions to produce internal heat. However, eventually these reactions will no longer generate sufficient heat to support the star agains its own gravity and the star will collapse.Do stars get hotter over time?
The Sun is becoming increasingly hotter (or more luminous) with time. However, the rate of change is so slight we won't notice anything even over many millennia, let alone a single human lifetime. The Sun produces energy through core thermonuclear fusion reactions which converts hydrogen into helium.What happens when stars die?
A star collapses when the fuel is used up and the energy flow from the core of the star stops. Nuclear reactions outside the core cause the dying star to expand outward in the "red giant" phase before it begins its inevitable collapse. If the star is about the same mass as the Sun, it will turn into a white dwarf star.How is a massive Stars Stage 4 Different than an average Stars Stage 4?
Stage 4 - The core collapses in less than a second, causing an explosion called a Supernova, in which a shock wave blows of the outer layers of the star. Stage 5 - Sometimes the core survives the explosion. If the surviving core is between 1.5 - 3 solar masses it contracts to become a a tiny, very dense Neutron Star.Do stars move?
The stars move along with fantastic speeds, but they are so far away that it takes a long time for their motion to be visible to us. You can understand this by moving your finger in front of your eyes. Even when you move it very slowly, it may appear to move faster than a speeding jet that is many miles away.Why do stars twinkle?
The stars twinkle in the night sky because of the effects of our atmosphere. When starlight enters our atmosphere it is affected by winds in the atmosphere and by areas with different temperatures and densities. This causes the light from the star to twinkle when seen from the ground.What is a supernova made of?
As the star runs out of nuclear fuel, some of its mass flows into its core. Eventually, the core is so heavy that it cannot withstand its own gravitational force. The core collapses, which results in the giant explosion of a supernova. The sun is a single star, but it does not have enough mass to become a supernova.Which element has the lowest mass per nuclear particle?
Iron
What is the range of star masses for high mass stars?
The masses of stars span the range from 0.08 to 150 (or more) times the mass of the Sun.Which stars have convective cores?
High-mass main sequence stars have convective cores, intermediate-mass stars have radiative cores, and low-mass stars are fully convective.What is the typical main sequence lifetime of a G type star?
A G-type main-sequence star will fuse hydrogen for approximately 10 billion years, until it is exhausted at the center of the star.What happens to the core of a star after the planetary nebula stage?
As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf. Like low-mass stars, high-mass stars are born in nebulae and evolve and live in the Main Sequence.Which of the following is the most common type of main sequence star?
A 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.Which method of energy generation is used by the Sun today?
Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.What core temperature is required before hydrogen fusion can begin in a star?
10 million K
What is the fate of a brown dwarf?
For main sequence stars, the gravity pushes inward until hydrogen fusion is jump-started in their core. But brown dwarfs never reach this crucial stage. Instead, before the temperatures get hot enough for hydrogen fusion to start, the close-packed material reaches a stable state and becomes a brown dwarf. 
