A heating rock.
Comets are celestial objects that have tails and move around the sun. When a comet is moving toward the sun, its tail points toward the sun.
Solar wind - i.e., particles coming from the Sun.
As a comet approaches the sun, it typically develops a bright coma (cloud of gas and dust) and a tail that points away from the sun due to solar radiation. The heat from the sun causes the ice in the comet to vaporize and release dust particles, creating these features.
A comet produces a shimmering tail that lasts a few days when it approaches the sun. This tail forms as sunlight vaporizes the comet's icy nucleus, releasing dust and gas that reflect sunlight to create a glowing effect.
Not directly, but as a comet approaches the sun, which is one big fusion reactor, the heat will cause the surface of the comet to vaporize, forming the comet's tail.
The length of the comet tail increases as it approaches the Sun because the heat causes volatile materials within the comet, like ice, to sublimate (turn directly from solid to gas). This process releases gas and dust particles, creating a long tail that points away from the Sun due to solar radiation and solar wind.
It doesn't 'do' anything. It contains the vast majority of the mass making up the comet. Gas and dust will 'boil' off when it approaches the sun giving the comet its distinct tail
Particles around a comet usually include dust and gas that are released as the comet approaches the sun. These particles form a glowing cloud called a coma which envelops the nucleus of the comet. As the comet gets closer to the sun, the solar wind pushes on the particles in the coma, creating the tail that points away from the sun.
All ices on comets sublime to gas as it approaches toe sun.
Far out in space, the comets tail is short. As it approaches the Sun, the heat melts away some of the ice covering the surface. As it evaporates into space, a tail is formed behind the comet. Always, the tail is facing away from the sun. This is why, when we see comets, their tails are almost as long as they get.
As a comet nears the sun, a tail forms from the solar wind blowing off dust particles from the comet. The tail lengthens as the solar wind intensifies and the comet approaches closer and closer. In some cases, comets have been known to collide with the sun, fragment, or completely burn away due to the sun.
This is the coma, the portion of the comet that sublimates from the surface as it approaches the sun.