Test fire today, woot woot! The test will be carried live on NASA TV beginning at 3:30 PM CDT / 4:30 EST / 20:30 UTC and will be streamed at nasa.gov/nasatv. In the meantime, a throwback... A layer of fog surrounds the A-1 Test Stand at the John C. Stennis Space Center in Hancock County, Mississippi as a Space Shuttle Main Engine (SSME) is test fired. A-1 is the test stand where today's test will occur. Credit: NASA / c. 1995 #SLSFiredUp #JourneyToMars #NASA #progress #enginetesting #rocketscience #smokeandfire #heritage #nasahistory #mississippi #madeinusa nasastennis nasa_marshall nasa