in quintillions
As a metal - yes, but the value is impossible to be measured today.
Asteroids are made of solid rock and metal.
Comets are composed mostly of ice while asteroids are mostly made of rock or metal.
Asteroids are made up of rock and metal
Asteroids are composed mainly of rock, metal, or a mixture of the two. Comets are a mixture of ice and rock.
Then the measured value is larger than the actual value.
Comets are a mix of dust, rock, and ice, while asteroids are primarily made of rock and metal. Comets usually have a tail when they approach the Sun due to the melting of the ice, while asteroids do not have tails.
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.
Asteroids are not luminous like stars. They do not produce their own light but instead reflect light from the Sun. When they are illuminated by sunlight, asteroids can sometimes appear bright in the night sky.
they are hot blue and black
Mostly iron, some nickel and copper