2020 – NASA sets the stage for Green Run testing of the SLS (Space Launch System) rocket’s first core stage as the flight article is lifted and installed on the B-2 Test Stand at NASA Stennis on Jan. 21-22.

2021 – Mary Byrd is named NASA Stennis associate director, effective Jan. 2, becoming the first woman to fill one of the top three leadership posts at the center.

2021 – NASA conducts a historic hot fire of its SLS (Space Launch System) core stage for the Artemis I mission on Jan. 16 on the B-2 Test Stand at NASA Stennis. The team successfully completes the countdown and ignition, but the engines shut down a little more than one minute into the hot fire.

2021 – NASA conducts a full-duration hot fire of more than 8 minutes of its SLS (Space Launch System) core stage on March 18 on the B-2 Test Stand at NASA Stennis, the most powerful test conducted at NASA Stennis in more than 40 years.

2021 – Aerojet Rocketdyne, an L3Harris Technologies company, conducts its final RS-68 test on the B-1 Test Stand at NASA Stennis on April 12, concluding a landmark testing partnership. NASA Stennis, Aerojet Rocketdyne Closes Historic Commercial Test Partnership – NASA.

2022 – On Feb. 8, NASA Stennis conducts the 50th hot fire of a RS-25 engine since “return-to-test” began in 2015. It also marks the 100th test an RS-25/space shuttle main engine is fired at 111% power level.

2023 – NASA completes an initial 12-test certification series on June 22 with a full-duration hot fire of an RS-25 engine, manufactured by SLS engines lead contractor Aerojet Rocketdyne, on the Fred Haise Test Stand at NASA Stennis. NASA Achieves Key Milestone for Production of Future Artemis Engines – NASA

2023 – Crews conduct a test of the NASA Stennis navigation lock system on Aug. 3, following a successful installation of four refurbished gates. The project marked the first time the gates had been removed from the system since original installation almost 60 years ago. NASA Stennis Lock System Project – NASA

2023 – NASA Stennis teams with Relativity Space on Sept. 7 as the company to announce a lease agreement for the company to operate the historic A-2 Test Stand onsite. NASA Stennis Inks Expanded Test Complex Agreement with Relativity Space – NASA

2023 – Evolution Space announces plans Oct. 10 to announce to establish production and testing operations for solid rocket motors at NASA Stennis. Evolution Space to Produce and Test Solid Rocket Motors at NASA Stennis – NASA

2024 – The SpaceX Transporter 10 mission launches March 4, carrying dozens of micro- and nanosatellites to orbit, including a Sidus Space LizzieSat-1 that carries NASA Stennis first-ever in-space mission – the ASTRA (Autonomous Satellite Technology for Resilient Applications) hardware/software payload.  Pending Launch Will Signal Start of Historic NASA Stennis Mission – NASA

2024 – NASA completes a second RS-25 engine 12-test certification series at NASA Stennis, the final major test milestone for production of new engines for future Artemis missions to the Moon and beyond. NASA Achieves Milestone for Engines to Power Future Artemis Missions – NASA

2024 – John Bailey is named director of NASA Stennis on April 24. NASA Administrator Names New Stennis Space Center Director – NASA

2024 – NASA Stennis and partner Sidus Space Inc. announce primary mission success July 2 for the center’s historic in-space mission aboard an orbiting satellite – the ASTRA (Autonomous Satellite Technology for Resilient Applications) hardware/software payload.  NASA Stennis Achieves Primary Success for Historic In-Space Mission – NASA

2024 – Christine Powell is named deputy director of NASA Stennis, effective Aug. 12, becoming the first woman to hold that position at the center. NASA’s Stennis Space Center Announces New Deputy Director – NASA

2024 – NASA Stennis announces Sept. 11 it will continue its historic in-space mission – the ASTRA (Autonomous Satellite Technology for Resilient Applications) hardware/software payload – aboard Sidus Space Inc. satellite. NASA Stennis Set to Continue ASTRA Mission with Sidus Space – NASA

2024 – NASA Stennis announces its first commercial range operations agreement for Skydweller Aero Inc. to operate its solar-powered autonomous aircraft in the site’s restricted airspace. NASA Stennis Takes Key Step in Expanding its Range Operations Work – NASA

2025 – NASA Stennis releases its first-ever open-source software, a peer review tool to facilitate more efficient and collaborative creation of systems applications, such as those used in its frontline government and commercial propulsion test work. NASA Stennis Releases First Open-Source Software – NASA