After 11 years mapping the Milky Way, the European Space Agency's Gaia space telescope has retired. Scientists hailed it as ...

But recently astronomers have used data collected by the European Space Agency’s Gaia spacecraft to detect three previously unknown black holes and, it turns out, are the closest known to Earth.

After more than ten years in space, the European Space Agency (ESA) has officially said goodbye to its Gaia spacecraft. On 27 ...