Which country’s space agency is to test-fire the Space Launch System (SLS), the most powerful rocket ever built? June 30, 2021 / By Preparation Point / Invention & Creativity Mcqs Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn United States China Germany None of these The U.S space agency NASA is set to ignite the most powerful rocket it’s ever built on January 17, 2021. Share this:TwitterFacebookMoreTelegramWhatsAppLike this:Like Loading... Related Share on WhatsApp Share on Facebook Share on Twitter Share on LinkedIn