Could the delivery of large amounts of hydrogen to the Sun really delay the arrival of the Red Giant

The reason why the Sun evolves into a red giant is because the hydrogen in the core is depleted, and the nuclear fusion of helium begins, which causes the outer layers to expand, and the Sun evolves from a main-sequence star to a massive red giant. But if you add hydrogen to the sun, it will only accelerate the expansion of the sun into a red giant, because this effect is a bit like adding fuel to the fire.

The more massive the star, the shorter the lifespan, rather than the longer. This is because the more massive the star is, the more significant the gravitational collapse of the star, resulting in a significant increase in the temperature and pressure of the center, which will accelerate the rate of nuclear fusion reactions, which in turn will deplete the nuclear fuel in a shorter period of time, triggering the rapid death of the star.

Therefore, if you want to delay the time for the Sun to enter the red giant phase, instead of sending hydrogen to the Sun, you need to extract material from the Sun and reduce the mass of the Sun to slow down the rate of nuclear fusion reactions. If the Sun were only half as massive as it is today, it would evolve into a red dwarf with a lifetime of at least tens of billions of years, and it would not have enough mass to expand into a red giant. Regardless of whether it can be done or not, it doesn't really make sense to do so, because if the sun gets smaller, the radiation power will also decrease, and the earth will be outside the habitable zone, unable to receive enough heat, and the earth will be frozen and life will not survive.

Sending a large amount of hydrogen to the sun not only does not prolong the life of the sun, but also accelerates the evolution of the sun into a red giant.

Transporting hydrogen to the core of the sun to participate in the reaction is very unreliable. Assuming that the foreign hydrogen can only be located in the troposphere, this loss is very large and should not be considered for the time being. Because a large amount of foreign hydrogen is added to the sun, it has been replenished in large quantities with unimaginable persistence.

In a nutshell, the mass of the Sun increases, the pressure and reaction in the inner core increases, the hydrogen in the core of the Sun is consumed faster, the equilibrium state will be destroyed faster, and the strong gravitational pull will make the Sun enter the red giant phase faster.

Unless it can be realized to provide hydrogen to the inner core of the sun, but with such a large amount and such a high difficulty, it is better to change the galaxy, which is not cost-effective.

No, it will take at least a few hundred million years for the age of the red giant to arrive, and by then humanity will have already been able to think of a solution.

If the high-tech technology of the future is already quite strong, it can still be done.

It can be delayed to a certain extent, but it cannot be reversed.

No, this process cannot be reversed, depending on the sky.

No, the forces of nature cannot be stopped.

It can delay a little time, but it still can't be stopped.

At this stage, the technology is difficult to achieve.

No, there will be a lot of difficulties.

There's no scientific basis for this, I don't know.

It shouldn't work, it's too difficult, it's not easy to achieve.

It has been calculated that when the Sun becomes a red giant, the Sun will engulf Mercury, Venus, and Earth in turn, and will expand to its maximum near the orbit of Mars. The surface temperature on several planets can reach thousands of degrees, and the gaseous material will completely evaporate, leaving not much of the low-melting, low-boiling material. A large amount of gaseous material is lost from the surface of the large planets of the outer solar system.

But the total mass of the large planet should not change too much.

All large planets, including their moons, still orbit the Sun in orbits, and there may be adjustments in their orbits, but not much.

What happens when the sun burns off hydrogen and becomes a red giant solar system?

To correct this, the sun does not run out of hydrogen when it becomes a red giant, but because the internal temperature is high enough to trigger helium fusion, which violently barriers. Hydrogen continues its thermonuclear reaction in the outer layers of the sun, forming an onion-like structure.

Let's talk about the ending of the planets? For example, will Mercury and Venus be engulfed, what will happen to Earth, what will happen to Mars? What happens to asteroids in the Little Star Belt?

Will Saturn and Jupiter evaporate, will outer solar system bodies such as Uranus and Neptune escape from the solar system with their moons, or will they only engulf the inner solar system bodies, and nothing else will change? So what about our human civilization?

Mercury and Venus will inevitably be engulfed by the Sun, and in a billion years' time, will almost certainly be destroyed and integrated into the Sun. The sun may expand to the vicinity of the Earth's orbit, and the Earth may be preserved, but even if it is not swallowed, the surface needs to maintain a high temperature of 2000-3000K for a billion years, which is certainly not suitable for human survival. At that time, humans may move to other celestial bodies in the solar system or find other suitable galaxies to live in.

The premise is that human civilization still exists at that time, although it is not felt by ordinary people, the current human peace is maintained under the nuclear deterrence of mutual destruction, and if the use of nuclear ** cannot be controlled, it may come to the end of civilization in the next one or two hundred years.

As for the other planets that are more distant, the impact is relatively limited. It's certain that the temperature of the surface will increase a bit, but the heat dissipation is proportional to the fourth power of temperature (absolute temperature scale), so there won't be much of a problem. As for escaping from the solar system, it is absolutely impossible, the gravitational pull of the sun does not change in any way, and the orbital parameters will not have any effect.