Artemis II set to launch no earlier than 6:24 p.m. ET on April 1, 2026, from Kennedy Space Center.
Three Americans and one Canadian will travel on a 10-day journey around the moon and back.
Astronauts will venture ~250,000 miles in space, surpassing the Apollo 13 distance record.
Mission is a vital test flight to prepare for a human moon landing within two years.
The SLS rocket launch could be visible across most of Florida and parts of Georgia.