European Space Agency Retires Successful Galaxy Mapping Telescope Gaia
The European Space Agency (ESA) has officially ended communication with its 11-year-old galaxy mapping spacecraft, Gaia. The decision was made due to the depletion of cold gas propellant needed for continuous scanning of the sky. Gaia’s primary mission was to create a three-dimensional map of the Milky Way galaxy by measuring the positions and motions … Read more