Kathmandu, January 13. National Aeronautics and Space Administration(NASA) is finally conducting the long-awaited hot-fire engine test of its most powerful mega-rocket on January 16. According to the official media statement, the test-ignition of the four main engines of its first Space Launch System(SLS) Heavy lift booster is the final stage of the “Green Run Test … Continue reading NASA to ignite its most powerful megarocket