Recently, NASA published its first results, perhaps in one of the most bizarre space investigations in the history of human flights.
Scott and Mark Kelly are identical twin brothers and astronauts who took part in the following experiment: Scott traveled to the International Space Station along with other astronauts for 340 days, and Mark stayed on Earth. The scientific project, called the Study of Twins, was set up to study the effect of large space flights on human health.
Human chromosomes are called telomeres, where their length decreases with each cell division. They can not be divided indefinitely and so are an aging factor. Now scientists have found that during the mission, Scott’s telometers were larger than his brother’s telomere. When the astronaut returned to Earth, his telomers quickly returned to the levels of preliminary control.
Some differences in siblings DNA have also been found, however, indicators have also returned to their previous levels after some time. What does this mean; For scientists it’s still not clear, and NASA plans to conduct additional studies with other astronauts.
Incidentally, the twin brother experiment brings to mind the “twin paradox”: in the context of relativity, Einstein concluded that the speed that is approaching the speed of light, time is slowing down. So Scott could be slightly younger, spending a year on the space station. Of course, the International Space Station is not moving at the speed of light, but perhaps the results of the research will soon answer the eternal question of aging.