
NASA @NASA
"One thing is certain: we can expect the unexpected." After launching into orbit last month, our #IXPE observatory is taking its first look at the polarized X-rays of our universe—starting with the supernova remnant Cassiopeia A: https://t.co/eXOiHlsKoC https://t.co/rfm5IhyXtq — PolitiTweet.org