Robyn Gatens, left, deputy director, ISS Division and system capability leader for Environmental Control and Life Support Systems (ECLSS) at NASA Headquarters in Washington, tours laboratories in the Space Station Processing Facility at the agency's Kennedy Space Center in Florida, on June 13, 2018. To her right is Molly Anderson, deputy ECLSS capability lead at Johnson Space Center in Houston. They are viewing plant growth chambers and seeing firsthand some of the capabilities in the center's Exploration Research and Technology Programs.

Robyn Gatens, left, deputy director, ISS Division and system capability leader for Environmental Control and Life Support Systems (ECLSS) at NASA Headquarters in Washington, tours laboratories in the Space Station Processing Facility at the agency's Kennedy Space Center in Florida, on June 13, 2018. Standing behind her is Ralph Fritsche, long-duration food production project manager at Kennedy. Gatens is viewing plant growth chambers and seeing firsthand some of the capabilities in the center's Exploration Research and Technology Programs.

Inside a laboratory in the Neil Armstrong Operations and Checkout Building at NASA's Kennedy Space Center in Florida, Dr. Luke Roberson, right, principal investigator for research and development in Swamp Works, explains the algae bio reactor to Robyn Gatens, center, deputy director, ISS Division and system capability leader for Environmental Control and Life Support Systems (ECLSS) at NASA Headquarters in Washington, on June 13, 2018. At far left is Molly Anderson, deputy ECLSS capability lead at Johnson Space Center in Houston. They are seeing firsthand some of the capabilities in the center's Exploration Research and Technology Programs.