What will happen if a comet hits the sun?

A newspaper once published an amazing news to the effect that1on the afternoon of August 30, 979, a satellite accidentally observed a strange phenomenon of a comet colliding with the sun while conducting an observation experiment on the solar wind. At that time, the comet was hitting the sun at a speed of at least 280 km/s, and its tail was more than 5 million km long.

This is a rare sun-grazing comet, which was first discovered by satellite. Some of these comets pass through the high temperature corona of the sun and fly by the sun; Others hit the sun directly and never came back.

1979' s sun-skimming comet is on the road of no return. According to the observation data sent back by the satellite, it should reach the perihelion on August 3 1 day, and its perihelion is only 0.00 1 astronomical unit, which is about150,000 km away from the sun center. Because the radius of the sun is about 700,000 kilometers, the perihelion of this sun-grazing comet is obviously inside the sun, about 550,000 kilometers below the surface of the sun. It seems that this comet can't cross the sun to reach perihelion in any case, and its destination can only be to crash into the sun and finally smash it.

It is not the only phenomenon that the sun-grazing comet collides with the sun. There are also "1887 1" sun-grazing comets. The perihelion of the orbit of this solar eclipse comet is only 27,000 kilometers away from the center of the sun. Before reaching perihelion, the disaster has come. First, the head of the comet "vanished" when it collided with the sun, and the incomplete tail disappeared without a trace after only one or two weeks.