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    Green Run Update: Data and Inspections Indicate Core Stage in Good Condition

    SLS ocket core stage comes alive during the Green Run hot fire test

    The Space Launch System (SLS) rocket Green Run team has reviewed extensive data and completed preliminary inspections that show the rocket’s hardware is in excellent condition after the Green Run test that ignited all the engines at 5:27 p.m. EST at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. After analyzing initial data, the …

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    Green Run Update: Hot Fire Conducted on Jan. 16

    NASA's Artemis logo. Credit: NASA

    Teams from NASA’s Space Launch System (SLS) Program conducted a hot fire of the Artemis I core stage on Jan. 16 at NASA’s Stennis Space Center. All four RS-25 engines ignited successfully, but the test was stopped early after about a minute. At this point, the test was fully automated. During the firing, the onboard …

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    Green Run Update: Engines Igniting as Hot Fire Gets Underway 

    Artemis Logo - red rocket trail, blue arch that represents earth, ARTEMIS text, gray half sphere on a white background

    The hot fire is underway for the Space Launch System (SLS) rocket core stage at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. Engine ignition began at approximately six tenths of a second before T-0, beginning with Engine 1, then Engines 3, 4, and 2 ignited in sequence a few hundredths of a second apart. The test is expected to last about 8 minutes and will include three different power …

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    Green Run Update: Terminal Countdown Sequence Started

    Artemis Logo - red rocket trail, blue arch that represents earth, ARTEMIS text, gray half sphere on a white background

    The test conductor polled the team and has approved the decision to proceed with the terminal countdown that includes the final 10 minutes before the hot fire. During the terminal countdown, the team is executing the autonomous launch sequence that simulates the countdown for the Artemis I launch. The test transitions from ground control to on-board software control of the core stage and so the test is fully automated starting at T-30 seconds.  Key milestones during the …

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    Green Run Update: Hot Fire Test Targeted for within an Hour

    Artemis Logo - red rocket trail, blue arch that represents earth, ARTEMIS text, gray half sphere on a white background

    The teams are now targeting a hot fire test for NASA’s Space Launch System (SLS) rocket core stage within an hour. The team has completed a successful pressurization demonstration and is evaluating the data to ensure they are ready to proceed. Live coverage is underway on NASA Television and the agency’s website. Teams began the …

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    Green Run Update: NASA TV Coverage Underway for Hot Fire Test 

    Artemis Logo - red rocket trail, blue arch that represents earth, ARTEMIS text, gray half sphere on a white background

    Countdown is continuing for the hot fire test of the core stage for NASA’s Space Launch System (SLS) rocket. The test is targeted for as early as 4 p.m. EST and is expected to last about 8 minutes to simulate launch and ascent of the SLS to orbit. NASA Television coverage has begun. Watch live: http://www.nasa.gov/live …

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    Green Run Update: Tanking Complete for Hot Fire Test

    This infographic explains more about the Green Run tests that have already occurred before this final hot fire test.

    Engineers have completed tanking for the hot fire test of NASA’s Space Launch System (SLS) rocket core stage at NASA’s Stennis Space Center, and the countdown is proceeding normally. The liquid hydrogen tank holds 537,000 gallons of liquid hydrogen, cooled to minus 423 degrees Fahrenheit. The liquid oxygen tank holds 196,000 gallons of liquid oxygen, cooled to minus 297 degrees Fahrenheit. The cryogenic fuel …

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    Artemis I Orion Moves For Fueling, Next Step in Launch Preparations

    Orion is buttoned up and ready to march towards the Multi-Payload Processing Facility to begin ground processing by the Exploration Ground Systems and Jacobs teams ahead of the Artemis I launch. Shielded by a protective covering for transport, the spacecraft departs its home at the Neil Armstrong Operations and Checkout Building at NASA's Kennedy Space Center in Florida on Jan. 16, 2021.

    NASA marked another milestone on the path toward the launch of Artemis I on Saturday, as engineers moved the Orion spacecraft out of the Neil Armstrong Operations & Checkout Building on its way to the Multi-Payload Processing Facility (MPPF) at the agency’s Kennedy Space Center in Florida, where the spacecraft will be fueled for its …

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    Green Run Update: Test Team Gives “Go” To Proceed with Tanking

    SLS Core Stage 101 Infographic

    The test team conducted a pre-test briefing in the Test Control Center at the B test complex at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, and gave a “go” to proceed with testing and to fill the propellant tanks. Over the next several hours, the teams will monitor the systems and load more than 700,000 gallons of cryogenic, or supercooled, liquid oxygen and …

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