Artemis II splashdown: Behind the risks of reentry

When four astronauts set off on their historic trip around the moon in NASA’s 16.5-foot-wide Orion spacecraft, they knew they’d be testing a known flaw with their spacecraft — one that had some experts urging the space agency not to fly the mission with humans on board. NASA remains confident it has a handle on the problem and the vehicle can bring the crew home safely.

The issue relates to a special coating applied to the bottom part of the spacecraft, called the heat shield. It’s a crucial piece of hardware designed to protect the astronauts from extreme temperatures as they’re descending back to Earth during the final stretch of their moon-bound mission called Artemis II.

0:00 25,000 mph, 5,000 degrees: Tom Foreman explains the risks
1:07 NASA is aware of heat shield's flaws
1:43 How the Artemis II crew is preparing for their return
2:56 "There's 13 things that have to go right"
4:15 Former astronaut Terry Virts on NASA's plan to minimize risk
6:28 What it's like to enter the atmosphere at 17,000 mph

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