Astronomers have measured the two most enormous supermassive black holes found so far, vast realms of titanic gravity large enough to swallow 10 of our solar systems. The black holes are much bigger than predicted, suggesting extra-large galaxies and their black holes grow and evolve differently than smaller ones.
Lurking in a distant supermassive black hole there exists a reservoir of water as big as 140 trillion oceans, the largest repository of water in the universe and 4,000 times more than exists in the Milky Way. Two teams of astronomers discovered this mass of water 12 billion light years away, where it manifests as vapor spread across hundreds of light years.
A nearby galaxy that looks like a smiley face harbors a dark secret: It has twin supermassive black holes, not just one. This rare find could shed light on what happens when ginormous galaxies collide.
Aliens could conceivably live on planets illuminated by the swirling mass of photons orbiting the singularity of a special type of black hole, according to a new theory.
Certain black holes are charged and rotate, and they possess a region past the event horizon — the point of no return — in which the fabric of spacetime appears normal again. This is called the inner Cauchy horizon.
Metamaterials can be used to create desktop black holes and simulate multiverses; now a physicist is using them to prove time travel can’t happen.
In a new paper, University of Maryland professor and metamaterial theorist Igor Smolyaninov says mapping light distribution in a metamaterial can serve as a model for the flow of time. The model shows that the forward direction of time is unrelenting; you cannot curve back on time and go back to where you started. You just have to build a desktop Big Bang to prove it.
A universal heavyweight champion was crowned this morning at the 217th meeting of the American Astronomical Society in Seattle: A giant black hole weighing a staggering 6.6 billion suns accepted the title of the most massive black hole for which a precise mass has been determined.
It sounds like something out of one of Douglas Adams' Hitchhiker's novels: a giant green cloud of gas known as Hanny's Voorwerp that, by all appearances, is about to devour a nearby galaxy. So what is it?
More than 30 years after Stephen Hawking predicted the existence of radiation emitted by black holes, physicists say they’ve finally observed the phenomenon for themselves, not in the heavens, but down here on Earth.
At the heart of M87, the Virgo A galaxy, is one of the biggest black holes ever seen — about 6 billion times more massive than the sun. Scientists working with the Chandra X-ray telescope and the Very Large Array have compiled this nice new image of its insatiable appetite in action.