NASA @NASA
There aren't many kinds of objects in our solar system we haven't seen up close with a spacecraft. Metal asteroids are one of them. Launching in 2022, #MissionToPsyche will explore a metal asteroid that may tell us more about the core of our own planet. https://t.co/KQqpKSeWoU https://t.co/9gsaCRVsBb — PolitiTweet.org