Years of computer simulations. Countless ground tests. They've all led up to now. The Planetary Society's crowdfund… https://t.co/WKW3Tlg5eF — Planetary Society (@exploreplanets) 1564600135.0
Years of computer simulations. Countless ground tests. They've all led up to now. The Planetary Society's crowdfund… https://t.co/WKW3Tlg5eF