Humans living in space for months, years, or even generations will need to navigate sex in a zero-gravity world.

Sperm may lose their ability to navigate in microgravity, raising new questions about whether human reproduction is possible in space.

Floating in near-weightless conditions can be disorienting for even the most experienced astronauts. Male reproductive ...

While space agencies are making significant preparations for long-term missions to the Moon and Mars, a fundamental human ...

If humans ever try to have babies in space, sperm may first need a navigation lesson. Australian researchers say that sperm ...