NASA's Artemis II crew is set to splash down in the Pacific Ocean off San Diego tonight, concluding their 10-day mission that took them deeper into space than any humans before. The astronauts traveled around the moon, seeing previously unexplored lunar regions while traveling at speeds of roughly 24,000 miles per hour.

Despite the mission's historic achievements, concerns linger about the spacecraft's heat shield, which showed flaws during Artemis I. Former NASA personnel questioned whether the mission should have been postponed given the shield's potential for failure. NASA officials maintain confidence in the crew's safe return, though the capsule lacks a backup heat shield.

The Artemis program represents NASA's return to crewed lunar exploration after decades, with this mission serving as a critical test before planned future landings. The successful completion would mark a significant milestone in establishing a sustainable presence on the moon.