NASA @NASA
Good things come in mini-fridge-sized packages. The Green Propellant Infusion Mission will test a low toxicity propellant in space for the first time. This technology could lengthen mission durations by using less propellant. Go green — in space: https://t.co/furecJkZz9 https://t.co/RJa4XN5QNQ — PolitiTweet.org