15/01/2025 (Agence Europe) – On Wednesday 15 January, the European Space Agency announced that Gaia, its probe for mapping the Milky Way, had completed the sky-scanning phase of its mission, accumulating more than three trillion observations of around two billion stars and other objects over the last decade. If Gaia’s fuel reserve runs out, technological tests are scheduled over the coming weeks before it is moved to its “retirement” orbit. Two massive data releases are scheduled...