How long does it take a cartilage piercing to heal?

Cartilage ear piercings may take up to a year to fully heal, but generally take 3-6 months (as opposed to the ear lobe, that takes just 4-6 weeks). They heal from the outside in, so even if it looks fine on the outside, you should not assume it is fully healed.

Band cthe nucleus of the atom

"observation" would be the correct answer