Fabricated steel begins arriving by truck for construction of the A-3 Test Stand, which will be used to test next-generation rocket engines

Construction of the A-3 Test Stand marks a milestone with completion of a pair of transfer docks to be used for delivery of rocket propellants (or fuel)

Stennis launches a yearlong 50th anniversary celebration with the first presentation in its Legends Lecture Series. NASA publicly announced plans to build a rocket engine test facility in Hancock County, Miss. on Oct. 25, 1961

Space shuttle Discovery completes the STS-133 mission, its final flight to space. The shuttle is powered into orbit for the mission by space shuttle main engines No. 2044, No. 2048 and No. 2058, all three of which were tested and proven flightworthy at Stennis

The Mars Science Laboratory mission's Curiosity rover, the most technologically advanced rover ever built, landed in Mars' Gale Crater the evening of August 5, 2012 PDT (morning of August 6 EDT) using a series of complicated landing maneuvers never before attempted

NASA engineers conduct three days of tests on a fourth-generation HD4B engine on the E-3 Test Stand, including several tests using a 3-D-printed nozzle. The engine is designed to power a prototype Project Morpheus planetary lander that could evolve to carry cargo and technologies safely to space destinations such as asteroids and Mars

Orbital Sciences Corporation launches its Antares rocket with the Cygnus spacecraft onboard for its second contracted cargo delivery mission to the International Space Station. The launch was powered by a pair of Aerojet Rocketdyne AJ26 rocket engines tested at Stennis

NASA completes the first developmental test series on the RS-25 engines that will power the new Space Launch System rocket. The series concludes with a 535-second test on the A-1 Test Stand at Stennis Space Center

The Saturn V S-IC-15 rocket stage makes a historic return to Stennis Space Center, en route to permanent display at the INFINITY Science Center. The rocket stage first traveled the waterway route to Stennis for testing in 1970. After its Apollo 19 mission was canceled, the stage remained at Michoud Assemby Facility until its transfer to INFINITY

Stennis Space Center is awarded NASA’s 2017 Small Business Administrator’s Cup for the best overall small business program. It marks the second time Stennis has earned the cup in the award’s eight-year history

NASA effectively caps a six-year process, reaching an all-but-complete state of readiness for testing the core stage of the agency's new Space Launch System (SLS) rocket. With a pair of propellant cold flows, a key gaseous nitrogen test and completion of all but a handful of rescheduled tasks, B-2 Project Manager Barry Robinson declares the last major steps of B-2 Test Stand activation for SLS core stage testing have been completed

A successful test culminates four-plus years of testing for the RS-25 engines that will send the first four Space Launch System (SLS) rockets into space. The hot fire on the A-1 Test Stand completes acceptance testing of all 16 former space shuttle main engines that will help launch the first four SLS missions, developmental and flightworthy testing for new RS-25 engine controllers for the first four missions and 51 months of testing that demonstrated RS-25 engines can perform at the higher power level needed to launch the heavy-lift SLS rocket

NASA suspends core stage testing activity on its Space Launch System (SLS) rocket's first core at Stennis Space Center in response to the spread of the COVID-19 virus. Limited teams return to the B-2 Test Stand at Stennis on May 11 to resume production and preparation activities to continue Green Run testing of the core stage, as conditions allow