iss055e016053 (4/11/2018) --- NASA astronaut Ricky Arnold works with the student-designed Genes in Space-5 experiment inside the Harmony module. The genetic research is helping scientists understand the relationship between DNA alterations and weakened immune systems possibly caused by living in space. Genes in Space is an innovation challenge including students and teachers across the United States from grades 7 through 12. Students design a pioneering DNA-related experiment to fly on the ISS, providing real-world training in science, technology, engineering and math (STEM) fields and connecting students to the space program.