in quintillions
As a metal - yes, but the value is impossible to be measured today.
Asteroids are made of solid rock and metal.
No. Asteroids are just made of rock and metal. They do not glow.
Comets are composed mostly of ice while asteroids are mostly made of rock or metal.
Asteroids are composed mainly of rock, metal, or a mixture of the two. Comets are a mixture of ice and rock.
Asteroids are made up of rock and metal
That varies. Some are more rocky, some have more metal, and there are even asteroids made up mainly of ice.
Not really, you're thinking of comets, asteroids are composed of rock, metal, or a combination of both.
they are hot blue and black
Mostly iron, some nickel and copper
Comets are mostly water and carbon dioxide, with a little bit of other materials, including some organic molecules. Asteroids are mostly carbonaceous or iron (metal).
Then the measured value is larger than the actual value.