NASA astronaut Nichole Ayers works on an experimental carbon dioxide removal device

iss073e0078896 (May 27, 2025) --- NASA astronaut and Expedition 73 Flight Engineer Nichole Ayers replaces components on an experimental carbon dioxide removal device. Also called the Thermal Amine Scrubber, the advanced life support mechanism is testing a new method that removes carbon dioxide from the station’s atmosphere and recovers water for oxygen generation.