NASA sent a twin to study nature vs nurture and results are visible

Space agencies around the world have a shared goal of taking people to Mars

NASA astronaut Scott Kelly recently spent one year in space, while his identical twin brother Mark (a former NASA astronaut himself) stayed on Earth. The mission was part of an important health experiment, looking at how being in space affects our bodies. While the data are still being studied carefully, NASA recently released some intriguing preliminary findings.

Kelly launched aboard the Russian Soyuz Rocket on March 27 2015, along with Russian cosmonauts Genaldy Padalka and Mikhail Kornienko (joining Kelly on the one year mission). Before, during