NASA and Northrop Grumman test SLS booster
NASA increases cost estimate for SLS development
NASA hopeful SLS Green Run test remains on schedule
Compatibility issue adds new wrinkle to Europa Clipper launch vehicle selection
NASA still grappling with effects of coronavirus pandemic
SLS static-fire test expected in October
NASA continues efforts to set up long-term SLS production
First SLS launch now expected in late 2021
Aerojet Rocketdyne defends SLS engine contract costs
GAO warns of continued cost growth on NASA exploration programs
Coronavirus pandemic to halt SLS testing
Report finds delays and cost overruns in SLS mobile launch platform development
SLS cost growth exceeds threshold for formal review
First SLS launch now expected in second half of 2021
First SLS core stage ready for shipment
NASA and Boeing look ahead to long-term SLS production

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