Red hot nickel ball of fire meet your toughest opponent yet: aerogel. In fact, aerogel is such an amazing material and excellent insulator that the eternal flame of the nickel ball does absolutely nothing to it.
Like, seriously. It affects the aerogel as much as the normal air around it (or in it too?). But hey. We're in the business of seeing destruction and in order to destroy aerogel, the nickel ball brought in reinforcements in the form of an hydrogen and oxygen flame. Everything burns eventually. [Cars and Water]