A brief silence in space: what happened during the Artemis II orbit adjustment?
As the Artemis II crew began their 10-day journey around the Moon, a sudden loss of communication briefly disconnected the spacecraft from Earth. While the crew remained in contact with ground teams, the cause of this data dropout remains a mystery that NASA engineers are now investigating.
Following the successful launch of Artemis II, the mission entered a critical phase of orbital refinement. To adjust the spacecraft's path, NASA engineers executed a perigee raise maneuver. This process involved the ignition of the RL10 engine on the interim cryogenic propulsion stage, a precisely timed burn designed to increase the lowest point of the Orion spacecraft’s orbit around Earth.
However, the maneuver was accompanied by a technical anomaly. Shortly after the engine burn, ground teams experienced a loss of communications, leaving them unable to receive data from either the crew or the spacecraft. While the outage was resolved quickly, and the astronauts confirmed they could still hear mission control, the specific cause of the communication drop-out is currently under investigation by NASA.
Despite this hiccup, the mission continues its progression toward more complex maneuvers. The next major milestone involves an apogee raise burn, which will increase the highest point of the spacecraft's orbit. This will prepare the Orion capsule for a roughly 23.5-hour checkout period in high Earth orbit.
Artemis II serves as a vital flight test for the Space Launch System (SLS) rocket and the Orion spacecraft. As the first crewed test of these technologies, the mission is foundational for NASA's long-term goals. The agency intends to use these successes to build the infrastructure necessary for deep lunar exploration and, eventually, the first human missions to Mars.
Source: NASA’s Artemis II Postlaunch News Conference (April 1, 2026)
