NASA @NASA
@zg66k7ytfs It took a couple of years to build the spacecraft. The IXPE mission was selected in January 2017, and building the structure began in 2019. IXPE was built, tested, and is set to rocket into space in December 2021. A look back at the process: https://t.co/IJTAUsZ4vf — PolitiTweet.org