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Artemis II is not safe to fly


“Our test facilities can’t reach the combination of heat flux, pressure, shear stresses, etc., that an actual reentering spacecraft does. We’re always having to wait for the flight test to get the final certification that our system is good to go.”—Jeremy VanderKam, deputy manager for Orion’s heat shield, speaking in 2022 On Wednesday, NASA will attempt to send four astronauts around the moon on a mission called Artemis II.

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