
NASA @NASA
Star-forming nebula W51 is one of the largest "star factories" in our galaxy. 🌌 While the region's visible light is blocked by interstellar dust, it was revealed in infrared by our @NASAUniverse Spitzer Space Telescope, launched 17 years ago this week: https://t.co/7WFzwvDMRN https://t.co/peWAnO6njH — PolitiTweet.org