As a quartet of astronauts make their way to the far side of the Moon, far-fetched notions of human colonies on the satellite or even Mars - a three-year return trip - are again getting an airing.

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

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

Researchers constructed a labyrinth at Adelaide University. It's not big; rather, it's made to fit under a microscope, with ...

Our cells are constantly being pushed, stretched, and compressed without our awareness: a play of invisible forces that ...

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

Off a quiet hallway on the top floor of a building at the University of Osaka in Japan, Katsuhiko Hayashi is hatching a revolution. Human embryo science: can the world’s regulators keep pace? He is on ...

Scientists have found that sperm in space can’t find their direction during their pursuit to fertilize an egg.

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

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