The four astronauts aboard NASA’s Orion spacecraft for the Artemis II mission encountered a second problem with their waste management system during the early days of the 10-day lunar flyby.
On April 3, 2026, the crew told mission control they tried to vent the wastewater tank connected to the toilet but encountered a suspected ice blockage.
The crew launched on April 1, 2026, from Kennedy Space Center on the first crewed Artemis flight, which is sending them on a path around the Moon and back to Earth.
The Orion capsule carries Commander Reid Wiseman, Pilot Victor Glover, Mission Specialist Christina Koch, and Mission Specialist Jeremy Hansen.
Their spacecraft, named after the integrity theme in some reports, uses the Universal Waste Management System for handling human waste in deep space.
Hours after launch on April 1, the crew first spotted a blinking fault light on the toilet system right before an apogee raise burn.
NASA officials identified the initial glitch as a controller issue that jammed the toilet fan. Astronaut Christina Koch worked with support teams in Houston to troubleshoot the problem.
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They restored full operations by April 2, and mission control communicated back that the toilet was “go for use.”
Crew members could still handle solid waste during the fix, but they relied on collapsible contingency urinals for urine collection until the system returned to service.
The second issue surfaced overnight on April 3, as Fox News reported on Saturday, April 4.
The crew reported problems venting the wastewater tank attached to the toilet. They suspected ice had formed in the lines, a known challenge in the frigid vacuum of space where liquids can freeze quickly without proper thermal control.
“We tried to vent the wastewater tank that’s attached to the toilet. We had problems with that due to suspected blockage, we think, probably due to ice,” the crew reported as quoted by Fox News.
The crew continued using contingency urine devices while engineers on the ground reviewed data and provided instructions.
Microgravity complicates fluid handling on any spacecraft. With no gravitational force working to bring waste material down, the Orion toilet uses suction to collect urine in a tank that is vented into space each day, while feces are kept in special bags until return to Earth.
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The Universal Waste Management System costs about $30 million to develop and improves on older designs that astronauts criticized for discomfort and odor.
On short missions similar to Artemis II, NASA does not recycle urine into drinking water as it does on the International Space Station. Instead, the crew vents liquid waste several times a day.
NASA confirmed the crew and surface teams successfully troubleshot the first toilet fault before moving on to proximity operations and other tests.
Officials said the system returned to normal after the initial repair, with recommendations to let the fan reach operating speed before and after use.
Artemis II mission taking shape.
The second venting problem did not halt mission activities. The astronauts completed their engine burns on schedule and continued toward the Moon.
Despite these two toilet issues, there was no impact on the crew’s health or the overall timeline for the lunar flyby.
Artemis II tests Orion’s deep-space capabilities, including life support systems, before the uncrewed Artemis III lands astronauts on the lunar surface in future years.
Engineers continue to monitor the waste system for any recurrence of ice or controller faults.
The crew is on track to return in about 10 days, with the flight marking the first time humans have traveled past low Earth orbit since Apollo 17 in 1972.
NASA is offering regular updates through blog posts and live commentary. The agency emphasized that quick teamwork between the astronauts and mission control resolved both problems without delay.
The Orion vehicle continues its journey, now farther from Earth than any crewed vehicle in more than 50 years.
