Using ESA’s Integral and XMM-Newton observatories, an international team of astronomers has found more evidence that massive black holes are surrounded by a doughnut-shaped gas cloud, called a torus. Depending on our line of sight, the torus can block the view of the black hole in the centre. The team looked `edge on’ into this doughnut to see features never before revealed in such a clarity.
Astronomy Orion Telescopes & Binoculars
A hundred satellites, all talking at once. Here's the intel., Air & Space Magazine
ESA - ESA's high-energy observatories spot doughnut-shaped cloud with a black-hole filling
Astronomy Orion Telescopes & Binoculars
INTEGRAL (INTErnational Gamma-Ray Astrophysics Laboratory) - eoPortal
How do black holes seem? Is there any real photo that NASA has taken? - Quora
Orbiter.ch Space News: 2016-01-17
Current Events Archive - 2003
ESA - Webb sheds light on galaxy evolution, black holes
black holes Archives - AAS Nova
All-sky visible and near infrared space astrometry
galactic collision Archives - Universe Today
Astronomy – sciencesprings
