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Artemis II is almost home. More on the heat shield that has to hold

Coming home from the moon means extreme speed and blistering heat. CNN’s Tom Foreman explains what happens at reentry and why the heat shield is mission-critical.


1:09 • Source: CNN
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(L-R) NASA's Artemis II mission astronauts Canadian Space Agency's Jeremy Hansen, Christina Koch, Victor Glover and commander Reid Wiseman react during a welcoming ceremony at Ellington Field Joint Reserve Base in Houston, Texas, on April 11, 2026. An elated NASA late April 10 was celebrating its successful voyage around the Moon, after four astronauts safely returned to Earth having completed the first lunar flyby in more than 50 years. The NASA spacecraft carrying four astronauts -- three Americans and one Canadian -- splashed down without a hitch off the California coast, capping the US space agency's crewed test mission that returned with spectacular images of the Moon. (Photo by RONALDO SCHEMIDT / AFP via Getty Images)
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