As private companies race to build orbital habitats and government agencies sketch out Mars timelines, a fundamental biological question remains largely unanswered: can humans safely reproduce in ...

Add Yahoo as a preferred source to see more of our stories on Google. Sex in space: Human reproduction beyond Earth policy must be urgently addressed, experts say As commercial spaceflight edges ...

On the third day after fertilisation a human embryo is made of six to 12 roughly identical cells; on day four its cells appear to fuse into a mostly uniform blob; and on day five it puffs out to ...

A new international study warns that reproductive health in space is no longer a theoretical concern and that questions about fertility and pregnancy should be pressing concerns. As commercial ...