News tagged with supermassive black holes

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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
3.6 / 5 (34) 22

Image: Grand swirls from Hubble

(Phys.org) —This new Hubble image shows NGC 1566, a beautiful galaxy located approximately 40 million light-years away in the constellation of Dorado (The Dolphinfish). NGC 1566 is an intermediate spiral ...

Jun 12, 2014
4.6 / 5 (8) 0

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

How fast do black holes spin?

There is nothing in the Universe more awe inspiring or mysterious than a black hole. Because of their massive gravity and ability to absorb even light, they defy our attempts to understand them. All their ...

Feb 14, 2014
4.8 / 5 (32) 27

A galaxy with two hearts

This new Hubble image shows the spiral galaxy Messier 83, otherwise known as the Southern Pinwheel Galaxy. One of the largest and closest barred spirals to us, this galaxy is dramatic and mysterious; it has ...

Jan 09, 2014
4.7 / 5 (9) 5

A new view of the energetic universe

The Nuclear Spectroscopic Telescope Array, or NuSTAR, sees the high-energy X-rays emitted by the densest, hottest regions of the universe. The brainchild of Fiona Harrison, Caltech's Benjamin M. Rosen Professor ...

Dec 03, 2013
4.9 / 5 (12) 8

Brightest beacons

Deep-space missions require precise navigation, in particular when approaching bodies such as Mars, Venus or a comet. How precise?

Oct 02, 2013
5 / 5 (3) 0