Anyone see UFO Hunders: UFO Relics? Think that was c. 2009.
Anyway, this guy, Bob White, PhD, says he saw this object fall from a UFO, so he finds this sorta cone shaped thing, about 7" long and has it analyzed.
Analysis says it's a polychrystaline semiconductor, an alluminum alloy with silicone and a high 4.3% silver. Apparently, we are only using a aluminum-silver alloy in superconductor experiments and this is like nothing known and is cutting edge nanotech. Such a thing can have zero electrical resistence and excludes interior magnetic field flows and can persist indefinately without an external power source. In space, the ship could expel the magnetic field of a planet without experiencing its forces. It needs no energy to be superconductive in space.
Spaceship technology, what do I know. I have no idea of the implications of all this and don't know if it's even true.
Gut . . .
Buy silver. Aliens know best.