NASA @NASA
βThis is the most primitive object ever encountered by a spacecraft.β π In the latest @ScienceCast, watch the origins of our solar system fly by as we reveal how a different kind of fossil β a Kuiper Belt Object β reveals clues about its beginnings: https://t.co/Evi2eznsj9 https://t.co/0d5dcslECs — PolitiTweet.org