What is a comet tail?

Every active comet has a tail - that's part of what makes comet a comet. Where does the comet's tail come from? For most of their lives, comets on the edge of the solar system are ice objects and lack tails. They are space rocks primarily made of ice and dust - when a comet is active, this rock is called a core. When the comet orbits the orbiting sun, it eventually passes into the inner solar system, where the solar wind and sunlight become so intense to evaporate some of the ice and dust of the comet, which subsequently ionizes and becomes a long, stretched comet.

Comet tail can be an extremely long-one astronomical unit (earth-sun distance, 150 million km or 93 million miles) -kó or immediate atmosphere around the comet can be greater than the sun. All this from the core any between 100 meters (328 ft) and 50 km (31 miles) across, with a diameter of 10 km (6 million) is typical of comets visible to the naked eye. Because Kometas spend only a small minority of their time in VNIt has a lot of ice and other volatile substances that can relax when they are heated by the sun.

The reasons why the tail of the comet is so bright despite its low density are complex. When solar ultraviolet rays affect the dust around the core, the photoelectric effect causes these particles to release electrons for each ultraviolet beam that excites them. These electrons produce the "induced magnetosphere" around the core that blocks externally flowing solar wind particles. Because comets move with supersonic speeds due to the sun wind, a bow is formed on the front of the comet, a similar shock of a bow created around a moving ship at the sea. Cometary ions, the "loading" solar magnetic field are gathering in this area. The shining plasma flows back from the direction of the sun and kolescified between the drawing of the outline of the magnetic field generated by MagneTospheric induced Comet.

So the luminous intensity in the comet tail usually comes from the luminosity of condensed ions, not the dust of the sun, even though the other contributes a little. Since the tail of the comet is not only generated by the material presence of dust particles behind the comet, it can be eliminated if the magnetic field is disrupted, which may occur during magnetic re -connection. This event, which can be triggered by ejecting the coronal weight from the Sun, has been observed on several occasions, most recently in Comet Enke in 2007, and is called the event of the tail disconnection. ”