The 322-foot-tall Artemis moon rocket, the most powerful ever built for NASA, finally blasted off Wednesday on a long-awaited flight to the moon.
, the most powerful ever built for NASA, finally blasted off Wednesday with an eruption of white-hot fire and an earth-shaking roar, boosting an uncrewed Orion capsule on a long-awaited flight to the moon.
The launching came 43 minutes later than planned because of work to fix an intermittent leak in a hydrogen valve on the rocket's mobile launch platform and because of a glitch that briefly interrupted radar tracking data. But once the problems were resolved, the final 10 minutes of the countdown ticked off without a hitch and the SLS rocket finally blasted off on its oft-delayed maiden voyage.
Spaceport managers and guests take in the Artemis 1 launch from a balcony 4.2 miles from pad 39B. The sky-lighting liftoff was accompanied by a thundering roar and a ground-shaking shock wave reminiscent of space shuttle launchings."Well, for once, I might be speechless," said Launch Director Charlie Blackwell-Thompson, addressing her team in the control room."I have talked a lot about appreciating the moment you're in. This is your moment...
Two minutes and 10 seconds after launch, they burned out and fell away at an altitude of 27 miles, leaving the four Aerojet Rocketdyne RS-25 core stage engines to continue the ascent on their own, generating a combined 2 million pounds of thrust.
That's how fast a spacecraft has to go to break free of Earth's gravity, raising the apogee to a point in space where the moon will be in five days. More generally, Artemis astronauts will carry out extended exploration and research to learn more about the moon's origin and evolution and test the hardware and procedures that will be necessary to eventually send astronauts to Mars.
That flight, targeted for launch in the 2025-26 timeframe, depends on the readiness of new spacesuits for NASA's moonwalkers and a lander being built by SpaceX that's based on the design of the company's reusable Starship rocket. Congress ordered NASA to build the Space Launch System rocket in the wake of the space shuttle's 2011 retirement, requiring the agency to use left-over shuttle components and existing technology where possible in a bid to keep costs down.
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