Skip to content
AsteriaStar
Space experiment · International Space Station

NASA Twins Study

Human spaceflight

Overview

The NASA Twins Study compared astronaut Scott Kelly during a year aboard the ISS with his identical twin on Earth, advancing understanding of how spaceflight affects the human body.

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • NASANational Aeronautics and Space Administration

    Mission data, planetary science, space telescopes, and public-domain imagery.

    Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.