Extended space travel can change your DNA😲🧬
Astronaut Scott Kelly, who spent a year at the International Space Station in 2016, returned to find that he was two inches taller than his departing height.
The new physical differences between Kelly and his identical twin brother, Mike - also an astronaut - were startling. Scientists compared the
DNA of the two and found that, besides, growing two inches, Kelly's gut bacteria were completely different and his gene expression had changed.
📌Scientists concluded that the changes were caused, by "the stresses of space travel, which can cause changes in a cell’s biological pathways." Although Kelly eventually returned to his original height, his other genetic changes are seemingly irreversible, meaning Kelly and his brother are no longer identical twins.🚀Space-travel| Astro-Science