The International Space Station (ISS) was built as a series of extensions; each module was launched to orbit individually and docked to a previous one. The most recent additions were made in 2021. The ISS also represents the quest to extend human habitation beyond Earth. In June 2024, two NASA astronauts arrived at the station for a week-long mission. As the ARs February 2025 issue went to print, they were still there, waiting to come homeRead stories from theExtensions issue2025-02-28AR EditorsShare