
NASA @NASA
🏙️ A test stand 35 stories tall. 🚀 Four RS-25 engines. 📊 Over 500 sensors and systems. Our @NASA_SLS rocket is being prepared for the last two core stage tests in the "Green Run" series at @NASAStennis: https://t.co/sngbDrPqmn https://t.co/UdEnIkrOKJ — PolitiTweet.org