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.
Black Hole – Space Facts – Astronomy, the Solar System & Outer Space
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ESA - A unique experiment to explore black holes
Astronomy Orion Telescopes & Binoculars
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ALMA Archives - Page 8 of 9 - Universe Today
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Astrophysics – sciencesprings
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