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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 …

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 …

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 …

Teams are progressing through the countdown and running approximately an hour ahead of schedule. The test is targeted for as early as 4 p.m. EST. Live coverage will begin earlier at 3:20 p.m. on NASA Television and the agency’s website. Learn more about Green Run, and check back at this blog for updates on the SLS core stage 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 …

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 …

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 …

Preparations for conducting the final Green Run test for NASA’s Space Launch System (SLS) rocket are proceeding as planned, and the core stage is on schedule for a hot fire test tomorrow igniting all four of its RS-25 engines. NASA is targeting a two-hour test window that opens at 5 p.m. EST Saturday, Jan.16, for …

NASA's Parker Solar Probe will make its next close approach to the Sun on Jan. 17, 2021, during its seventh science-gathering orbit around our star.