"It looks like fireworks bloom," said Chris Mason, principal researcher at the twin experiment, Chris Mason of the Cornell University School of Medicine
Figure / NASA
NASA to carry out a one-year plan last year and the Russian space agency "(One-Year Mission), the astronaut Scott Kelly (Scott Kelly) and Mikhail Kotniko (Mikhail Korniyenko) to the international space station a year, from the beginning of March 27, 2015, a total of 342 days.
Scott's twin brother Mark Kelly (Mark Kelly) in NASA, the control is responsible for the ground. When Scott returned to earth, and Mark together to participate in another NASA project: researchers will conduct a comparative study on their living space, to see what will be the impact on human genes.
In February of this year, NASA announced some research advances. They found that Scott's chromosomes telomere lengthened, but returned to normal when he returned to Earth. Telomeres are repetitive sequences at the end of chromosomes and are closely related to cell aging. Whenever chromosomes are duplicated, telomeres are shortened, and if the telomeres are depleted, the cells will die.
In addition, they also found that Scott's leucocyte methylation levels and intestinal flora are different from Mark.
NASA said the final result of this experiment will be announced next year. Mason said it will be by far the most comprehensive report on human biology. The reason NASA values this experiment is that it is hard to find a pair of twin astronauts. The second is that they want to understand the risks of space life through this experiment, as well as ways to protect and repair genetic changes and prepare for deeper space missions , Such as sending humans to Mars.
At present, space life has been shown to have side effects on the human body, such as disrupting their ontological sensation systems. An astronaut who once performed missions on the Apollo spacecraft later recalled in an interview that when he entered space he did not feel at all limbs. In addition, space life will produce osteoporosis, muscle relaxation (because you do not have to fight gravity) and other side effects.
Title / NASA