Human Heart Shows Ageing Signs After One Month in Space

A study published in the Proceedings of the National Academy of Sciences reveals that engineered human heart tissue sent to the International Space Station weakened and exhibited irregular beating patterns after 30 days in microgravity. The research highlights molecular changes mimicking aging, with altered gene expression linked to inflammation and heart disorders. The innovative "heart-on-a-chip" system could help explore the effects of spaceflight on various organs and assess potential counteracting drugs.