Astronauts aboard the historic Artemis II moon mission are set to encounter another critical communications blackout as they make their dramatic return to Earth on Friday night. This event marks a significant phase in the crew's journey back from their lunar expedition, with precise timing and high-stakes maneuvers defining the splashdown process.
Atmospheric Entry and Blackout Details
The Orion capsule is scheduled to make initial contact with Earth's upper atmosphere at approximately 7:53 pm EDT, which corresponds to 12:53 am BST. This moment will trigger a planned six-minute communications blackout, a period during which plasma buildup around the capsule disrupts signal transmission. At this point, the crew will be positioned 400,000 feet above the Earth's surface, traveling at an astonishing speed of nearly 35 times the speed of sound.
Physical Demands on the Crew
During the re-entry profile, the astronauts are expected to experience gravitational forces of up to 3.9 Gs, adding to the physical challenges of their return. This intense phase underscores the rigorous training and preparation required for such missions, as the crew navigates the extreme conditions of atmospheric re-entry.
Parachute Deployment and Splashdown Sequence
Following the blackout, at 8:03 pm EDT or 1:03 am BST, drogue parachutes will deploy to slow and stabilize the Orion capsule as it approaches splashdown. Approximately one minute later, three main parachutes will activate, reducing Orion's speed to less than 136 miles per hour. The capsule will then decelerate further to about 20 mph before making its final descent.
Completion of the Journey
Orion is projected to splash down in the Pacific Ocean, off the coast of San Diego, at 8:07 pm EDT or 1:07 am BST. This event will conclude the Artemis II crew's return to Earth, capping off an epic 694,481-mile journey that has captured global attention and advanced human space exploration efforts. The successful splashdown represents a key milestone in NASA's ongoing Artemis program, paving the way for future lunar missions.
