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<\/p>\nNASA’s Artemis II Live Views from Kennedy Space Center – YouTube
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Watch On <\/a><\/p>\n NASA will fuel up its huge Artemis 2 moon rocket today (Feb. 2), and you can watch the crucial prelaunch test live.<\/p>\n On Saturday night (Jan. 31), the agency officially began Artemis 2’s “wet dress rehearsal,”<\/a> a two-day-long exercise that runs through the key procedures and operations that will precede an actual liftoff. Perhaps the most important of these operations is fueling \u2014 loading up Artemis 2<\/a>‘s Space Launch System (SLS<\/a>) rocket with more than 700,000 gallons (2.65 million liters) of super-cold liquid oxygen and liquid hydrogen propellant.<\/p>\n <\/p>\n The Artemis 2 wet dress is targeting a simulated launch time tonight of 9 p.m. EST (0200 GMT on Feb. 3). Tanking operations are scheduled to begin about 10 hours before that \u2014 so, around 11 a.m. EST (1600 GMT). You can watch live here at Space.com<\/a>, courtesy of NASA; the agency is livestreaming the wet dress 24\/7.<\/p>\n You may like<\/p>\n You shouldn’t necessarily expect everything to go smoothly today. Fueling up a giant rocket is a tricky operation, after all \u2014 especially when one of the propellants is liquid hydrogen, whose constituent molecules are tiny. Liquid hydrogen can escape through the smallest of fissures, as we saw during the wet dress rehearsals for Artemis 1<\/a>.<\/p>\n Artemis 1 was originally targeted to launch in early 2022, but hydrogen leaks<\/a> discovered during multiple wet dresses pushed things back considerably. In the end, everything worked out: Artemis 1 launched in November 2022, successfully sending an uncrewed Orion capsule to lunar orbit and back to Earth.<\/p>\n A lot more is riding on Artemis 2. It will carry four astronauts \u2014 NASA’s Reid Wiseman, Victor Glover and Christina Koch, and the Canadian Space Agency’s Jeremy Hansen \u2014 on a roughly 10-day trip around the moon<\/a> and back to Earth. It will be the first crewed mission to lunar realms since Apollo 17<\/a> in December 1972.<\/p>\n NASA is currently targeting Feb. 8 for Artemis 2’s liftoff, which will take place from Launch Complex-39B at Kennedy Space Center<\/a> (KSC) in Florida. The SLS-Orion stack rolled out to Pad 39B from KSC’s cavernous Vehicle Assembly Building on Jan. 17<\/a>.<\/p>\n