Science & Exploration
Lockman Hole spectra
X-ray image of the Lockman Hole and the very detailed spectra of nine sources obtained by XMM-Newton (Image courtesy of G. Hasinger, AIP)
The Lockman Hole in X-rays
Herschel's target: the so-called Lockman Hole
Supermassive black hole
Artist’s impression of stellar-mass black hole
