The How & Why of RS-25 TestingLearn the how and why of why we test the RS-25 Engines. They have successfully flown dozens of missions on the space shuttle but there are a number of reasons they still need to be tested for SLS.Read More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/how-why-of-rs-25-testing/Copy URL to clipboard> DownloadShareSize1041x784px