TORONTO – The Orion capsule successfully separated from its European Space Agency (ESA)-provided service module, a key step in the Artemis II mission’s return to Earth, according to CBC’s live broadcast on Thursday. The separation occurred on schedule, with mission control in Houston confirming the maneuver.

Heat Shield Concerns

The upcoming re-entry phase is focused on the performance of the capsule’s heat shield, which will endure temperatures reaching 2,700 degrees Celsius as it enters the atmosphere at approximately 40,000 kilometers per hour. Experts appearing on the broadcast, including Bob McDonald, host of CBC’s Quarks and Quarks, noted concerns stemming from issues experienced during the Artemis I mission, where portions of the heat shield were damaged due to gas buildup. NASA has conducted extensive testing and made adjustments to the re-entry profile to mitigate these risks, but a non-zero chance of failure remains, according to McDonald.

Former astronaut Steve McLean, also appearing on CBC, highlighted the extensive vetting process Canadian astronaut Jeremy Hansen underwent prior to the mission, noting his technical skills and communication abilities.

Communication Blackout Expected

During re-entry, a period of approximately six minutes of communication blackout is expected as the plasma surrounding the capsule will disrupt signals. Mission control confirmed the capsule is currently on the correct trajectory, maintaining a flight path within one degree of the target angle. The crew reported a view of the moon during the broadcast.

The capsule is expected to re-enter the atmosphere in approximately 15 minutes, with splashdown anticipated off the coast of San Diego.