ESA's Aeolus satellite is pioneering a laser technology to measure the wind from space for the very first time. It promises a big boost to weather forecasting, but only once it has proved itself to be accurate. We head to Norway as the science team swings into action.
Astronomy is undergoing a revolution with the release of precision data on 1.7 billion stars in our galaxy from the Gaia space telescope. We head to the historic Observatory of Paris and ESA's ESTEC base in the Netherlands to find out more.