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

New study finds microgravity disrupts sperm and embryo development, raising concerns about human reproduction in space.

Floating in near-weightless conditions can be disorienting for even the most experienced astronauts. Male reproductive cells—sperm—also seem to get confused in simulated microgravity, which has ...

The advancement of science is a funny thing. We may know a lot about alpaca sex, but when it comes to how human babies are made, there are still gaps in our knowledge. Now, biologists at the Max ...

Sperm struggles to find its way to an egg in microgravity, suggesting mammalian reproduction in space may not be possible.