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[UPDATE: More testing and pictures] Orion mass simulator installed atop Artemis I SLS

NASA teams are racing towards the first launch of the SLS rocket at Kennedy Space Center. The final pieces needed for sull stack testing were installed a few days ago, the Orion stage adapter structural test article, and Orion Mass Simulator. The full stack of SLS is expected to roll out to LC-39B for further testing and a Wet Dress Rehearsal.

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NASA test fires SLS RS-25 engine at Stennis, validating new manufacturing process

NASA recently conducted an important 8-minute RS-25 single-engine hot fire test at Stennis Space Center in South Mississippi. Space Launch System (SLS) relies on four RS-25 engines (and two solid rocket boosters) to leave the planet for destinations like the Moon and beyond as part of NASA’s Artemis program.

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NASA selects SpaceX to develop human landing system for Artemis moon mission using Starship

NASA is actively working on Artemis, a space exploration program that includes a mission to send the first woman and first person of color to the Moon during this decade. Astronauts will travel from Earth in NASA’s Orion spacecraft which will launch on the space agency’s Space Launch System rocket. SLS gives Orion the boost it needs to reach the Moon, but Orion doesn’t touch down on the lunar surface. A third vehicle called a human landing system is needed to transport astronauts to the surface of the Moon. One year ago, NASA selected three potential partners for providing the human landing system for Artemis 3, the first mission in the program that includes walking on the Moon.

Later today, the U.S. space agency will officially announce which partner it will proceed in funding for development. Ace Washington Post space reporter and author Christian Davenport has scooped the 4 p.m. EDT press conference with source selection details. According to Davenport, SpaceX has won the contract with its Starship-based human landing system bid.

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[Update: Test Window Announced] Artemis I booster stacking is now complete; Awaits first Core Stage

Over the last few years, the pieces of NASA’s Artemis I mission have slowly been making their way to Kennedy Space Center for final checkouts and stacking. For the past couple of months, NASA has been preparing to receive the final parts of the rocket with the first step towards a fully stacked SLS finishing the other day.

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SLS: NASA says aborted hot fire test met several goals of the test and clarifies cryo-cycling concern

After the SLS Core Stage hot fire test that aborted just over a minute into the test, it was uncertain what objectives were met and if they would need to do a second test fire. During the second press conference Tuesday afternoon, concerns arose about the Core Stage reaching its cryo-cycling limit before the launch but today NASA shares the Core Stage and Artemis 1 timeline may be in better shape than first thought.

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Why did Space Launch System’s Green Run hot fire test abruptly end early? NASA can explain …

NASA released a statement this week detailing information about some of the findings that contributed to the early shutdown of the Artemis 1 Core Stage during the Green Run Hot Fire test on Saturday. The test was originally supposed to last about 8 minutes, but ended up only lasting 67.2 seconds, far short of the minimum amount of time needed to certify the core.

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[UPDATED] NASA’s upgraded mobile launcher for larger Space Launch System rocket moving forward

NASA recently submitted a permit detailing facility construction and modification plans to support its next Mobile Launch Platform for Space Launch System, the agency’s nearly complete rocket to the Moon. We first have to go back to where SLS all started with the Constellation program to understand why NASA is building a new Mobile Launch Platform.

The current Mobile Launcher, ML-1, was initially built for the Constellation program between 2009 and 2010. When the Constellation program was canned in October 2010, NASA started reworking ML-1 to support their new program for the Space Launch System. With the increased complexity and weight of SLS, issues quickly began to arise.

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