NASA @NASA
Angles. Are. Everything. π @NASAPersevere is one step closer to launch as final preparations are underway at @NASAKennedy. Over three days, the robotic scientist was tilted on its x, y and z axis to determine its center of gravity. Why? Find out: https://t.co/EPZpGFvdK0 https://t.co/vpHecMAk0B — PolitiTweet.org