"If reproduction is ever to occur beyond Earth, it must do so with a clear commitment to safety, transparency and ethical ...

As space travel expands, scientists warn that reproductive health risks and ethical gaps can no longer be ignored.

Human reproduction requires both male and female gametes. Gametes are special sex cells that contain the genetic information necessary to create a new life. Men produce millions of gametes called ...

As humanity moves from short-term space missions toward extended stays beyond Earth—driven by commercial ambitions for lunar ...

The male genital system consists of both external and internal parts. The external male genitalia include the penis, urethra, and scrotum. The internal male genitalia include the seminal vesicle, ...