#black-holes

#black-holes

Around 38 percent of websites that were on the Internet in 2013 are gone now. Half of Wikipedia pages reference dead links. Information seems to be disappearing all around us, and that's nothing new. Over geological time, information loss is the norm, not the exception. Yet according to physics, information is never destroyed. In principle, a burned book is just as readable as the originalif you analyze the ashes of the fire, the smoke and the flames to re-create the incinerated words.

Back in 2019, the gravitational wave observatories LIGO and Virgo detected major ripples in spacetime. While astronomers generally agree that the event, dubbed GW190521, was the result of two black holes colliding, a team of researchers at the Chinese Academy of Sciences has proposed a far more eyebrow-raising explanation. As detailed in a yet-to-be-peer-reviewed paper, first spotted by ScienceAlert, the researchers suggest that LIGO and Virgo instead picked up the signals of a black hole collision in a different universe than ours.

The oldest and most distant black hole known to scientists dates back 13.3 billion years ago, when our universe was still in its teething stage.

Supermassive black holes exist within galaxies, significantly heavier than normal black holes, requiring advanced detectors like LISA for direct observation.

Everything is unusual about this galaxy. Not only does it look very strange, but it also has this supermassive black hole that's pulling a lot of material in.