Astronaut Scott Kelly set a record for the longest single spaceflight in history and now NASA is saying the trip made him a “new man” as well. A study of Kelly and his identical twin brother found that spending nearly a year in space significantly changed the astronaut’s DNA.
Kelly spent 340 straight days aboard the International Space Station from 2015 to 2016. When the NASA veteran returned to Earth, researchers immediately noted that he had grown two inches in height. A new study comparing Scott to his identical twin, Mark — who is also a NASA astronaut and stayed on Earth during the 340-day trip — has revealed that long-term space travel alters more than just your height.
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2 comments:
The height will readjust with the effects of gravity. The spinal column with begin to compress again within the first week of being back on Earth. The DNA is interesting however.
Anonymous said...
The height will readjust with the effects of gravity. The spinal column with begin to compress again within the first week of being back on Earth. The DNA is interesting however.
March 15, 2018 at 5:44 PM
While Scott Kelly’s height and 93 percent of his DNA returned to normal after returning to Earth, NASA confirmed that seven percent of his genes have remained changed and may stay that way. “This is thought to be from the stresses of space travel, which can cause changes in a cell’s biological pathways and ejection of DNA and RNA,” researchers added.
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