Washington [US], March 30 (ANI): Long periods of time spent in space will require travellers to engage in high-intensity exercise to maintain their heart health, according to a new study.
Moscow [Russia], Dec 10 (ANI/Sputnik): A round trip to Mars will expose space travellers to dangerously high levels of solar radiation that is estimated to shorten their lifespan by two years and a half, a research has found.