title: The first decade of science with Chandra and XMM-Newton.
abstract: NASA's Chandra X-ray Observatory and the ESA's X-ray Multi-Mirror Mission (XMM-Newton) made their first observations ten years ago. The complementary capabilities of these observatories allow us to make high-resolution images and precisely measure the energy of cosmic X-rays. Less than 50 years after the first detection of an extrasolar X-ray source, these observatories have achieved an increase in sensitivity comparable to going from naked-eye observations to the most powerful optical telescopes over the past 400 years. We highlight some of the many discoveries made by Chandra and XMM-Newton that have transformed twenty-first century astronomy.
authors.affiliation: XMM-Newton Science Operations Centre, European Space Agency, Villanueva de la Cañada, 28691 Madrid, Spain.
authors.forename: Maria
authors.initials: M
authors.lastname: Santos-Lleo
authors.forename: Norbert
authors.initials: N
authors.lastname: Schartel
authors.forename: Harvey
authors.initials: H
authors.lastname: Tananbaum
authors.forename: Wallace
authors.initials: W
authors.lastname: Tucker
authors.forename: Martin C
authors.initials: MC
authors.lastname: Weisskopf