https://www.theregister.co.uk/2019/06/25/human_colonization/

Humans may be able to colonize space after all, as a new study shows frozen sperm seems to be unaffected by the effects of microgravity.

Scientists from Dexeus Women's Health, a gynecology and reproductive health clinic in Barcelona, Spain, and the Polytechnic University of Barcelona, sent ten samples of frozen sperm aboard a CAP10 aircraft. Yes, we know: aircraft. Not an actual craft in outer space.