how long till we see the development of personal spaceflight? if we can use triggered nuclear isomers for fuel like tantalum 182m or hafnium we would only need 60 grams of the stuff to launch a 10 tonne personal rocket into space in a kind of nuclear saltwater type rocket. surely it cant be too long until personal spaceflight to the moon is achieved the same way people can get a flying license as a hobby and buy a cheap plane on upper middle wage?