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Actually very cold. It's composed of frozen Hydrogen gas while the white spots are composed of frozen ammonia gas.
The solid portion of a comet or more accurately, the source for all the gases and dust that make a comet visible to us, is called the nucleus.
pluto's atmoshpere
The nucleus is very small, often only a few kilometers across. Scientists describe the nucleus as a "dirty snowball." It is made of dust and ice-frozen water and frozen gases. Over time, the nucleus becomes more and more black and solid. As water and gases evaporate from the surface, dark, heavy tar-like matter gets left behind.
No.
comets
Actually very cold. It's composed of frozen Hydrogen gas while the white spots are composed of frozen ammonia gas.
pluto's atmoshpere
The solid portion of a comet or more accurately, the source for all the gases and dust that make a comet visible to us, is called the nucleus.
pluto's atmoshpere
Hydrosphere
Mars has two polar ice caps. The northern ice cap is mainly composed of frozen H2O. The southern ice cap is mainly composed of frozen CO2.
The nucleus of a comet is mostly solid, while the coma and tail of the comet is composed of gasses and (we believe) a lot of dust. As the comet approaches the Sun, sunlight heats the nucleus of the comet and melts some of the frozen gasses, which sublimate into space carrying dust into space, forming the coma and the tail of the comet.
Not really, you're thinking of comets, asteroids are composed of rock, metal, or a combination of both.
The nucleus is very small, often only a few kilometers across. Scientists describe the nucleus as a "dirty snowball." It is made of dust and ice-frozen water and frozen gases. Over time, the nucleus becomes more and more black and solid. As water and gases evaporate from the surface, dark, heavy tar-like matter gets left behind.
The Comets.
No.