NO, they are made of rocks.
No. They do not have enough gravity to hold on to the gasses.
Asteroids are made of boogers and it is about 32in
Asteroids are made of solid rock and metal.
Asteroids Minerals Asteroids are made of Rocks,Craters and other Asteroids So .... most sciientist bielieve they are remanings of planets not formed
gasses
Asteroids are primarily rock and ice
Im not quite sure if there is a classification for asteroids, but most asteroids are made up of Iron and some have Nickel
It is thought that Asteroids are leftover material from unfinished planets.
asteroids is made of chunks of rock
A comet has a highly elliptical orbit that swings it in close to the Sun for a short period, and then far out away from the Sun for a much longer period. The essence of "comet" is that when it is close to the Sun, the volatile gasses boil away carrying very reflective dust and gas into space. The Sun lights up these gasses and dust, causing the tail of the comet to glow. Asteroids are generally in orbits that are less extremely elliptical, don't get all THAT close to the Sun, and have no volatile gasses that can boil off and glow in the sunshine. A large number of asteroids are in the toroidal asteroid "belt", a huge doughnut-shaped region between the orbits of Mars and Jupiter. However, there are plenty of asteroids that swing in between Jupiter and somewhere near the Earth. It's possible that these asteroids were once comets, but which have lost all their volatile gasses and no longer glow.
meteorids
Asteroids