What happens when two stars collide?

Stellar collisions produce violent**. By estimating the total mass of the Milky Way, scientists have calculated that the escape velocity of the Milky Way is about 110 to 120 kilometers per second (110 120 kms). So the ** of the star collision can easily reach this speed.

In fact, the shock wave generated by a supernova ** can reach an instantaneous speed of 100,000 kilometers per second, which is 1 3 of the speed of light. However, because the Milky Way is so large, it would take tens of thousands of years to escape the galaxy, even if it were to escape at the speed of a supernova shockwave. More critically, during the escape process, the velocity is constantly attenuated by gravity.

So it will take hundreds of millions of years to really escape the galaxy. Moreover, when the flying object encounters an obstacle such as an interstellar cloud, it will further slow down, and even eventually fail to reach the escape speed and remain in the galaxy forever.

In our physics class, our teacher imagined what would happen if two stars collided, and we all came up with a lot of hypotheses. I said that after the two stars collide, there will definitely be a big universe, and maybe it will affect our earth. I was arguing with my tablemate, who thought that it might cause the collapse of meteorites on Earth, but there was no trace of the shattered stars in the universe, only a few specimens of gas.

Later, we went to the teacher to theorize, and the teacher felt that when the collision occurred, a huge kinetic energy was released, and the collision surface produced an impulse wave surface and emitted a dazzling light, but the direction of this shock wave was the center line of the two stars. In addition, along the direction of the collision, a small portion of the star's material is thrown outward. There will be no arguments between the two of us, we are completely convinced, but we still haven't learned enough deeply. ‍‍

Stellar collisions occur in areas with a high concentration of stars, such as the center of galaxies and star clusters, and most of the other galaxies are empty, and galaxy fusion does not change anything; And the relative velocity between stars is generally tens of kilometers per second, which is too small for the distance between them. Therefore, most of the stars are slowly wriggling in the vast galaxy, and it is difficult for them to run into each other's territory for the rest of their lives. ‍‍

Once, when I was watching a TV science and education channel, I once saw the idea of a star collision, and the experts on TV predicted that the stars would fall to the earth after the collision, causing harm to our atmosphere, and the lakes and oceans would be directly affected by the huge energy impact of the stars, which would directly cause the sea level to drop sharply, and it was likely that the sea water would be filled in. I really scoffed and asked our physics teacher, who didn't think so. The magnetic fields of the two stars interact, the magnetic energy is released, and the gas is constantly ejected, like the burning flame.

For example, two suns will merge into one and become a new star, which will appear unstable in expansion and contraction, which is the more abnormal "starquake". I think this idea is quite plausible. ‍

If two white dwarfs are two stars, then this is a very spectacular one: the carbon-oxygen white dwarf binary stars collided due to the loss of energy due to gravitational waves, and the merger instantly exceeded the Chandrasaka limit to ignite carbon-oxygen nuclear fusion, triggering a type IA supernova explosion.

If neutron stars collide and merge, they can form a kind of "star of stars" of peculiar objects. It was a rare and spectacular collision between two stars, brighter than a nova explosion but fainter than a supernova explosion, giving rise to a phenomenon known as the "red transient." This is an extremely rare event in which a star merges with another star**, throwing the core material into space, leaving only a faint remnant hidden in a cold region rich in molecules and dust. ‍‍

The hypothetical is the mildest collision, which fuses to produce new stars; More violent collisions eject more gaseous material out, producing a glow close to that of a supernova explosion, and forming a "remnant" near the collision zone. In addition, if the participants in the collision are neutron stars, it is likely that the collision will create a black hole.

Normally, a binary star system ends with two stars colliding. The scene is spectacular, but you can't hear it, you can only see it. If a pair of stars collide in the universe not far from Earth, the first thing we will see is an extremely bright light, which will be visible during the day.

Neutrinos may be detected before that. The Earth's atmosphere is then subjected to energetic particles. Then the Earth is stretched by the gravitational waves generated by **.

If the space can't bear it, it will collapse to form a black hole, and if it can withstand it, it will become a gas cloud, with high quality and high radiation, because most of the perseverance is composed of hydrogen and helium, so even if the stars really hit, it will not have a huge impact on the universe and our earth.

In general (especially in the case of main-sequence star collisions), the mass of the merged star increases, the central pressure increases, the rate of the nuclear reaction is accelerated, and the radius of the star becomes larger. This is not nonsense, although it is natural for two balls to fuse together and grow in a larger radius, but his radius will increase by an order of magnitude (ten or a hundred times). This is important for stars in dense clusters, as a larger radius increases the chances of continuing to merge with other stars.

I think two stars collide to create a huge black hole, and this black hole is very attractive.

Have you ever seen an atomic nucleus with only two masses? There is a strong repulsion between the stars that is generated by the radiation of their energy.

Two planets collided, and the skull was wrapped!

It's all very far away, billions of years later, and there's no point in discussing it now.

Gamma-ray bursts are generated.

After the collision, a small star is born.

Do you want to know how the two suns appeared?

01 The universe is very vast, and the density of stars in the universe is very low, two stars collide, at least two conditions must be met: first, the two stars are very close, which is the distance at which the gravitational pull of these two stars can affect each other. Second, the two stars are moving in opposite directions, and the angles should not deviate too much.

Theoretically, there is a chance that stars that meet the conditions will collide, but this probability is extremely low.

We can often see this kind of visually striking scene in classic Hollywood movies: two stars in the universe suddenly deviate from their orbits and crash towards each other at breakneck speed. At first, due to the distance, people did not know that once the two stars collided, the space between the cosmic celestial bodies was forcibly changed, and countless debris produced by the impact flew to the earth, and the rays that can cause great harm to life suddenly increased, and the ozone layer in the earth's atmosphere gradually disappeared, and human life faced great challenges.

These are scenes that can only be seen in movies, but do the stars in the sky really collide?

The so-called star is a celestial body that can emit light on its own, usually spherical or spherical, such as the sun is a star. Generally speaking, stellar sails and hail are far away from the Earth, and it is difficult for us to detect their changes without the help of astronomical observation tools. We can observe about 6,000 stars at night, but they are not visible during the day due to the strong sunlight.

Stars are massive and most are made up of plasma. If the density of the inner core of the star is sufficient, hydrogen can be converted to helium through nuclear fusion. Stars emit light because of nuclear fusion in their inner core, which produces a large amount of energy that is transmitted from the core to the surface, and from the surface to space through radiation from the outside world.

As nuclear fusion continues, the inner core of the star shrinks and heats up, the outer shell expands outward and cools, and finally the center of the star becomes a white dwarf.

The universe is very vast, and it is far beyond our imagination. The density of stars in the universe is very low, and if two stars must collide, at least the following two conditions must be met: first, the two stars are very close to each other, and this distance is the distance at which the gravitational pull of the two stars can affect each other.

Second, the two stars are moving in opposite directions, and the angles should not deviate too much, otherwise the two stars will not collide. These two conditions seem simple, but there are not too many stars that meet the conditions. Theoretically, there is a possibility that a star that meets the conditions will collide with each other, but this probability is lower than the probability of winning the lottery twice in a row, and we don't have to worry about this at all.

The collision of two stars means that the two stars may be destroyed, and if they are relatively close to the Earth, the Earth will be affected by the fall of the remnants of the impact, affecting the ecological environment of the Earth.

If two stars collide, a large number of meteorites will be produced. And there will be an explosion of tremendous energy. Some meteorites and energy ripples and have a good chance of destroying the Earth.

If two stars collide, there should be a cosmic phenomenon**, if these two stars are very close to the earth, then the earth will also be affected and affected to a certain extent.

When one star collides with another, if the kinetic energy released during the collision exceeds their own gravitational binding energy, the two stars disintegrate and can no longer rely on gravity to gather. In the universe, stars collide with each other, and stars that are close to each other are surrounded by each other's gravitational pull, and then gradually lose kinetic energy over a long period of time and finally collide together.

Two stars will happen** and then produce gravel that will become a meteorite if it falls into the Earth's atmosphere.

The collision will result in a huge release of energy, and the shattered material may become a third star.

Because the other stars are far away from the Sun and have their own orbits, they do not collide with the Sun.

I think they're all in constant motion around the Earth, and they're in sync, so there's no chance of a collision.

Because these stars revolve around the sun in the universe, and they also have a certain repulsion with the sun, they will not collide.

There is a certain chance of hitting it, but it is very small because the celestial body has its own orbit. But for various reasons, the star can go off orbit, and even then, the chance of the star hitting the Earth is very small (about equal to 0). If a star really hits the earth, with the current technology, there should be no way.

Not in recent decades, and I won't know about it in the future.

Is it possible that it won't be our turn?