In the translunar injection (TLI) burn, which helped Artemis II escape Earth’s gravitational influence and fly to the Moon, the spacecraft traveled at 39,472 kilometers (24,527 miles) per hour. TLI and re-entry into Earth’s atmosphere when it returns were the two times during the mission it reached such high speeds. After TLI, Artemis II coasted at a speed of a few thousand kilometers per hour.
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