The radiation risks we discovered are mostly a concern for travel beyond low earth orbit, such as months-long missions to Mars. Shorter trips to the moon -- such as the Apollo missions -- or months spent in Earth orbit aboard the International Space Station appear to pose a much lower risk of radiation-induced cognitive deficits. I would definitely like to go into space for at least a few quick orbits.  I'm also confident that my lab and others will expand our understanding of how chronic radiation impacts the nervous system and to develop the effective countermeasures needed to enable safe missions towards the moon or Mars within the next decade. However, I'm not sure I'm ready to leave my lab unattended for two years while I take a sabbatical to Mars.