Mercury can be ionised by solar energy and de-ionised by solar power again. this releases energy. this can be used as aviation fuel. there are proofs that this was used as fuel in planes in indian mythology
Answer
Mercury is very
heavy.
planes need to be light.
you should not release mercury into the atmosphere.
"there are proofs that this was used as fuel in planes in indian mythology"
huh? what planes were there in indian mythology?