News tagged with massive black hole

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Are ultra-luminous galaxies colliding?

(Phys.org) —ltra-luminous infrared galaxies ((ULIRGs) are galaxies whose luminosity exceeds that of a trillion suns, By way of comparison, our Milky Way galaxy has a typical modest luminosity of only about ...

Jun 27, 2014
4.7 / 5 (9) 3

How much of the universe is black holes?

We all fear black holes, but how many of them are there out there, really? Between the stellar mass black holes and the supermassive ones, just how much of our Universe is black holes?

Jun 17, 2014
3.5 / 5 (30) 22

Image: X-raying the cosmos

When we gaze up at the night sky, we are only seeing part of the story. Unfortunately, some of the most powerful and energetic events in the Universe are invisible to our eyes – and to even the best optical ...

Apr 22, 2014
4.7 / 5 (7) 0

Hardy star survives supernova blast

(Phys.org) —When a massive star runs out fuel, it collapses and explodes as a supernova. Although these explosions are extremely powerful, it is possible for a companion star to endure the blast. A team ...

Mar 20, 2014
4.6 / 5 (16) 0

Preserving the legacy of the X-ray universe

Every year, October is designated as American Archive Month. While many people may think "archive" means only dusty books and letters, there are, in fact, many other types of important archives. This includes ...

Oct 29, 2013
5 / 5 (1) 1

Galaxy winds

(Phys.org) —The most luminous galaxies in our universe are not particularly bright in the visible. Most of their energy output (which can be hundreds or even thousands of times more than our Milky Way's) ...

Sep 23, 2013
4.8 / 5 (5) 1 | with audio podcast