Today NASA's Johnson Space Center list server news announced impending research into the study of the risks of space radiation to humans living in space. This is the next major hurdle we must overcome before we embark on anything longer range than short-term visits to the moon.
Our inability to shield the inhabitants of a space-traveling vehicle from deadly space radiation is not a subject addressed on our fun fictional shows, even that famous standard of television sci-fi, Star Trek. But it does grind our hopes of interplanetary space travel to a screeching halt, at least until this problem is solved.
I wonder what possible solution may lie ahead, and if it will ever be found during my lifetime.