Yes, they are nick-named 'dirty snowballs' and also contain rocks. What you see as the comet's tail is the ice melting because of the sun. When the comet returns to outer space the tail is no longer present. Gradually, the comets reduce in size because of this melting.
Comets contain ice.
Comets are mostly made up of ice. They usually have a metallic core high in nickel. The tail of a comet is actually the ice melting as it passes a heat source.
Comets are composed mostly of ice while asteroids are mostly made of rock or metal.
Comets are mostly made up of ice. They usually have a metallic core high in nickel. The tail of a comet is actually the ice melting as it passes a heat source.
Typically, asteroids are silicates (rocks) and water (in the form of ice), which is pretty much the same stuff that comets are made of, except that the big, beautiful comets are mostly water, and the asteroids are mostly rock. Asteroids may also have some metals and someday these may be commercially valuable.
Comets contain ice.
mostly ice
Comets are made mostly of ice.
Comets are mostly made up of ice. They usually have a metallic core high in nickel. The tail of a comet is actually the ice melting as it passes a heat source.
None of them. Try comets and some of the smaller satellites.
Comets are composed mostly of ice while asteroids are mostly made of rock or metal.
Comets are mostly made up of ice. They usually have a metallic core high in nickel. The tail of a comet is actually the ice melting as it passes a heat source.
No. While comets contain some rock, they are mostly made of ice.
No.
Some comets are made of ice and dust.
Comets are made mainly from ice, with a slight mixture of small rocks and dust.
Typically, asteroids are silicates (rocks) and water (in the form of ice), which is pretty much the same stuff that comets are made of, except that the big, beautiful comets are mostly water, and the asteroids are mostly rock. Asteroids may also have some metals and someday these may be commercially valuable.