AIR & SPACE MAGAZINE Test Run Good Luck NASA test fires an RS-25 engine at Stennis Space Center in Mississippi last February. Four of these engines, along with two solid rocket boosters, will power the Space Launch System. NASA April 21, 2017 Get our newsletter! Get our newsletter! You Might Also Like Station Nightlights May 12, 2014 A Very Visible Cold Front August 25, 2014 VAB Readies for SLS August 5, 2016 Bring the Flow July 31, 2015 Sunflowers in Space April 30, 2014 Get the latest stories in your inbox every weekday. Email Powered by Salesforce Marketing Cloud (Privacy Notice / Terms & Conditions)