The human heart shrivels away in space, but researchers have found that mini-hearts grown from human stem cells sprout in space significantly faster than in labs on Earth.

Spaceflight is hard on the heart, yet artificial ones grow better in space than on Earth

Source: space
Source Link: https://www.space.com/space-exploration/human-spaceflight/spaceflight-is-hard-on-the-heart-yet-artificial-ones-grow-better-in-space-than-on-earth