Dude?

All-female astronaut crews could reproduce in space without the help of accompanying men, new research suggests.

The study found that frozen samples of sperm exposed to microgravity retained similar characteristics to sperm samples kept on the ground, raising hopes that a sperm bank could one day be set up in space to help populate new worlds.

This could prove interesting for female astronauts, amid reports that future missions to Mars may involve women-only space crews.