Yes, absolutely. A piece of paper can, in fact,be folded more than 7 times. It has been done many times in many places all around the world. It’s just that the people who accomplished the feat used a lot of paper! In other words, it was not a piece of paper that you could simply tear from some notebook. Also, there were numerous people involved in the process.
They are composed of rock, dust, ice and frozen gases such as carbon monoxide, carbon dioxide, methane, and ammonia. Sometimes called dirty snowballs, recent studies have shown that the ice of a comet is covered by a crust. Comets also contain a variety of organic compounds as well as the gases already mentioned.