ESA - European Space Agency on Instagram: "What’s hiding inside this box from space? 👀 Inside is the very first metal 3D-printed object made aboard the International Space Station! Scientists will now compare the object with reference prints made on Earth to study how microgravity affects 3D metal printing. One of our goals for future space development is to create a circular space economy, recycling materials in orbit for better resource use. In the future, we could repurpose old satellite par