Here’s how it works. A European Space Agency telescope celebrated 20 years of exploring the secrets of the X-ray universe this week. The XMM-Newton telescope, which launched on Dec. 10 ...

For nearly two decades, the X-ray Multi-Mirror Mission (XMM) Newton telescope has probed the hot X-ray universe, hunting for missing matter, monitoring black holes and their eating habits ...

The XMM-Newton super-telescope, almost 11 metres high and weighing just under four tonnes, is the largest research satellite ever built on behalf of the European Space Agency (ESA). It now ranks ...