"--In 2017, researchers discovered that the endcaps of Scott Kelly’s chromosomes—his telomeres—had become longer while he was in space---", quote from an article in Newsweek magazine. Scott Kelly: Nasa twin study.. If the that protective feature at our genetic material is growing in the damaging space environment, can we build on that, to help get moving into the gravity -free-er environments that will makes it easier to keep going further? It could not have been an evolutionary feature, because no life seems to have been zapped by the space environment before, to keep chromosomes from fraying when fried. or does it show the arrival of the fittest random feature (In this case Kelly's summoning his protection) has been part of the process all along?