The Artemis II mission is almost at an end. In just a few hours the Orion spacecraft will enter Earth’s atmosphere and eventually splashdown in the ocean off the coast of California.
Crew separation is scheduled for 7:33 p.m. [ET], when the teardrop-shaped crew module—carrying four astronauts—splits from the service module that powers and propels the spacecraft. That moment matters because it exposes the crew module’s heat shield, built to take the brunt of blistering temperatures as Orion races through the atmosphere. The spacecraft will hit the atmosphere at nearly 24,000 miles per hour, then rely on parachutes to slow it to about 335 m.p.h., before dropping again to around 20 m.p.h. or less.
After it lands, recovery teams from NASA and the U.S. Navy are set to stabilize the Orion capsule and help the crew board helicopters that will deliver them to the U.S.S. John P. Murtha. From there, the crew will undergo medical evaluations on the ship before traveling back to shore, and eventually fly to NASA’s Johnson Space Center in Houston. The splashdown is expected at 8:07 p.m. ET, which is 5:07 p.m. on the west coast. Live coverage is planned for about 90 minutes before that point—so for people watching, there’s a narrow window to catch the descent.
NASA doesn’t expect the splashdown to be visible along much of the coastline. It’s set to occur more than a hundred miles off the coast, around two hours before sunset in the same direction, while Orion is also moving at more than 30 times the speed of sound—fast enough that the team is concerned it could set off sonic booms. Even with that, you can almost picture the moment from the ground: the first thump, the delayed echo rolling in, and then the quiet afterward—like waiting for the air to stop remembering the speed.
Still, reentry is the phase where some observers have focused their nerves. Misryoum newsroom reported that concerns have centered on the Orion heat shield, described as “sub-optimal.” Several former NASA engineers and a former astronaut have expressed worry that the bottom heat shield—designed to protect the crew from extreme temperatures—might not be safe. The reason this keeps coming up is that this vital piece of hardware is nearly identical to the heat shield flown on Artemis I.
That 2022 uncrewed test flight returned with its 16.5-feet (5-meter-wide) shield pockmarked by unexpected damage, prompting NASA to investigate. Misryoum editorial desk noted that for later missions, heat shields on future Orion capsules will be adjusted in the hopes of preventing cracking entirely. For Artemis II, though, the heat shield was not changed. Instead, NASA says it addressed the issue by adjusting the reentry flight path—coming in at a steeper angle to reduce exposure to the harshest part of reentry. According to NASA, the Orion capsule will descend at a steeper angle, reducing the spacecraft’s exposure to the most extreme temperatures of re-entry from 20 minutes to 13.5 minutes. Temperatures while plunging through the atmosphere can reach 4,000 to 5,000 degrees Fahrenheit. Weather is another potential problem, but so far it seems relatively calm and cooperating in the splashdown area.
And that’s basically the whole gamble: speed, timing, and whether the modified path buys enough safety margin. If you’re waiting for the view, keep expectations aligned—because visibility may be limited and the sound, if it happens, might be what reaches people first. The rest is almost automatic: heat shield does its job, parachutes take over, then water, and finally the slow work of getting everyone stable and home. Or maybe not slow—because once it’s down, the recovery clock starts right away.