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.

On Earth human sperm tend to know where to go when it comes to fertilizing an egg in utero. But that may not be the case in ...

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

A new study suggests humans face barriers to reproducing in space, with microgravity disrupting sperm movement.

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

Space has always been a centre of attention among the scientific community. Even the tech moguls are racing to build ...