News tagged with black holes

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

Centaurus A: A new look at an old friend

(Phys.org) —Just weeks after NASA's Chandra X-ray Observatory began operations in 1999, the telescope pointed at Centaurus A (Cen A, for short). This galaxy, at a distance of about 12 million light-years ...

Feb 06, 2014
4.9 / 5 (20) 49 | with audio podcast

Could we harvest energy from a star?

Our civilization will need more power in the future. Count on it. The ways we use power today: for lighting, transportation, food distribution and even entertainment would have sounded hilarious and far fetched ...

Feb 04, 2014
3.6 / 5 (23) 40