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The NASA Twins Study was conducted. Astronaut Scott Kelly is selected for the mission with his identical twin, Mark Kelly, on earth as control group. Scott spent 340 days in space for the experiment. The result demonstrated several long-lasting changes, including those related to alterations in DNA and cognition. [3] [4]
nasa Time can appear to move faster or slower to us relative to others in a different part of space-time. That means astronauts on the International Space Station age slower than people on Earth.
In 2013 NASA published a study that found changes to the eyes and eyesight of monkeys with spaceflights longer than 6 months. [85] Noted changes included a flattening of the eyeball and changes to the retina. [85] Space traveler's eyesight can become blurry after too much time in space. [86] [87] Another effect is known as cosmic ray visual ...
Telomeres at the end of a chromosome. The relationship between telomeres and longevity and changing the length of telomeres is one of the new fields of research on increasing human lifespan and even human immortality. [1] [2] Telomeres are sequences at the ends of chromosomes that shorten with each cell division and determine the lifespan of ...
NASA's Scott Kelly spent a year on board the International Space Station to test the effects of space travel on his body, while his identical twin and fellow astronaut Mark Kelly remained on earth.
Twins Scott Kelly and Mark Kelly are taking part in an ongoing first-of-its-kind twin study with NASA.
A telomere (/ ˈ t ɛ l ə m ɪər, ˈ t iː l ə-/; from Ancient Greek τέλος (télos) 'end' and μέρος (méros) 'part') is a region of repetitive nucleotide sequences associated with specialized proteins at the ends of linear chromosomes (see Sequences). Telomeres are a widespread genetic feature most commonly found in eukaryotes.
Studies have shown [citation needed] that the evolutionary fate of minisatellites tends towards an equilibrium distribution in the size of alleles, until mutations in the flanking DNA affect the recombinational activity of a minisatellite by suppressing DNA instability. Such an event would ultimately lead to the extinction of a hypermutable ...