NASA Twins Study finds remarkable resilience to the stress of space

April 15, 2019
Scott Kelly and Mark Kelly

Astronaut Scott Kelly spent a year on the International Space Station while his identical twin, former astronaut Mark Kelly, remained on Earth as part of the NASA Twins Study.

Credit: NASA

A Brown assistant professor studied how the mitochondria, the “cellular powerhouse,” responds to microgravity stress markers as a part of a NASA study of identical twins--a comparison of an astronaut who went to space and his twin who stayed on Earth.