Our #HubbleTopImage features stars on the move 🏃⁠ ⁠ With a mass of more than 10,000 suns packed into a volume with a diameter of three light-years, the massive young star cluster in the nebula NGC 3603 is one of the most compact stellar clusters in the Milky Way and an ideal place to test theories for their formation!⁠ ⁠ Astronomers compared observations made ten years apart to measure the motion of hundreds of young stars in NGC 3603 – and they found the stars moving in unexpected ways.⁠ ⁠ To find out how, check the link in bio.⁠ ⁠ 📷 NASA, ESA, and Wolfgang Brandner (MPIA), Boyke Rochau (MPIA) and Andrea Stolte (University of Cologne)⁠ ⁠ #ESA #Hubble