NASA @NASA
We challenged citizen inventors to create full-scale habitat designs, suitable for the Moon or Mars, using 3D printing. Watch us put these structures to the test: 🔥10am ET smoke test ⬇️11am ET impact test 🚧 2pm ET crush test Tune in: https://t.co/Sm916e98Mx https://t.co/LfUdLnnIZz — PolitiTweet.org