The X-Ray Astronomy Revolution: The Ongoing Impact of XMM-Newton an d Chandra

Observations in the X-ray band provide an unique view of cosmic high energy processes and key constraints on phenomena which cannot be probed through other techniques. In 10 years of operation, the XMM-Newton and Chandra observatories have revolutionised our knowledge of the Universe at X-ray wavelengths, challenging previous paradigms and providing major advances in our understanding of the physics and evolution of X-ray sources. This RAS discussion meeting will highlight some of the major contributions made by XMM-Newton and Chandra to key questions in astrophysics and cosmology.