We've known for over 30 years that there are other stellar systems in our galaxy, but we don't have any idea how many there ...

What the animated exoplanet timeline shows The video shows a flattened map of the 360-degree ... it looks this way because our solar system drifts within the spiral galaxy. Each circle that ...

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