The Artemis 2 Orion heat shield underwater after splashdown on April 10, 2026. (Image credit: U.S. Navy) The Artemis 2 heat shield looks like a sunken treasure from the Titanic in an underwater shot following splashdown. What is it? On April 10, NASA's Artemis 2 mission ended its historic 10-day journey around the moon and back. This was the first crewed mission to the moon since 1972, which is when the final mission of NASA's Apollo program wrapped up. Article continues below Following splashdown, U.S. Navy divers helped extract the crew from the capsule so the astronauts could continue on their way home. The Orion capsule will be returned to NASA's Kennedy Space Center for additional study following the mission — but before it was plucked from the ocean, the divers managed to capture images of the capsule and its heat shield underwater. Why is it incredible? This image is eerie and captivating.…