The SLS program continues with preparations for the first human spaceflight to the Moon’s vicinity since 1972. Currently scheduled for April 2026, the mission’s date could be moved up to as early as February if no major issues arise. Meanwhile, the program’s future faces uncertainties as the proposed NASA budget for Fiscal Year 2026 aims to end the SLS and Orion programs after the Artemis III lunar landing.
SSME
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Aerojet Rocketdyne, an L3Harris Technologies Company, is helping install four of its RS-25 liquid-propellant rocket…
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The four RS-25 engines from Aerojet Rocketdyne successfully propelled the Core Stage, Interim Cryogenic Propulsion…
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Hot-fire tests of new RS-25 engine components will resume in 2021 to certify a new…
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Artemis
SLS continuing engine upgrades, tech development to support launcher evolution
by Philip SlossThe Liquid Engines Office for NASA’s Space Launch System (SLS) Program is planning a busy…
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NASA is extending its RS-25 engine production contract with Aerojet Rocketdyne through the rest of…
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Artemis
Aerojet Rocketdyne overviews RS-25 installation success ahead of MAF rollout milestone
by Philip SlossFour Aerojet Rocketdyne RS-25 engines are fully installed in a NASA Space Launch System (SLS)…
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After another launch scrub for weather, Space Shuttle mission STS-93 lifted off from the Kennedy…
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Artemis
Shuttle veteran RS-25 engines ready for SLS Core Stage installation ahead of Artemis-1
by Philip SlossThe four RS-25 engines for the first launch of NASA’s Space Launch System (SLS) have…
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One of the main elements of NASA’s Space Launch System (SLS) Core Stage that makes…
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The RS-25 engine test team at NASA’s Stennis Space Center in Mississippi ran the next…
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A ground test RS-25 engine has conducted another test firing Thursday afternoon while held in…
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Artemis
RS-25 aborts test during production restart development hot fire – still achieves objectives
by Philip SlossThe RS-25 team at the Stennis Space Center in Mississippi began the next development test…
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As the next series of RS-25 engine test firings at the Stennis Space Center in…
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CommercialShuttle
SSME returns as AR-22 for rapid reuse demonstration, fired ten times in ten days
by Philip SlossAerojet Rocketdyne successfully completed a nearly two-week long rapid-turnaround test-firing demonstration of a Space Shuttle…
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Restart of RS-25 rocket engine production is ramping up at prime contractor Aerojet Rocketdyne’s Canoga…
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ArtemisOther
NASA requests alternative options to RS-25s on SLS core stage – RS-25 will remain uncontested
by Chris BerginIn the latest of a series of Request For Information (RFI) filings, NASA has called…
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An RS-25 engine throttled up to 113 percent of rated power for the first time…
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NASA and prime contractor Aerojet Rocketdyne are continuing a fast pace of RS-25 test firings…
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The RS-25 test team conducted their first hot-fire test of the year in the A-1…