Black hole

Despite their name, black holes can give off bright flares of light, usually as they shred stars. Most of those are one-off events, but now astronomers have discovered an extragalactic Old Faithful that fires up like clockwork every 114 days.

Astronomers have found a distant galaxy that has managed to continue making stars despite the presence of a "cold quasar" raging at its core. The discovery goes against current scientific knowledge and has prompted a rethink of how galaxies evolve.

Astronomers have witnessed a rare celestial light show – a star being stretched into “spaghetti” by a black hole. More than 200 million light-years from Earth, the dying star was ripped to shreds by immense gravitational forces over six months.

The 2020 Nobel Prize in Physics has been awarded to Roger Penrose for his proof that black holes result from general relativity, and jointly to Reinhard Genzel and Andrea Ghez for discovering the supermassive monster at the center of the Milky Way.

Exactly why and how the expansion of the universe is accelerating remains unknown. One hypothesis blames strange black-hole-like objects made of dark energy, and now astrophysicists have theorized how these objects work and where they all went.

The LIGO and Virgo Scientific Collaboration has detected gravitational waves coming from the most massive black hole collision that it's ever recorded. The end result created a gargantuan black hole that belongs to a new class.

“Strange metals” exhibit some unusual conductive properties and surprisingly, even have things in common with black holes. Now, a new study has characterized them in more detail, and found that strange metals constitute a new state of matter.

Despite the name, black holes often shine very bright in the sky, due to their hot glowing corona. Now, astronomers have been puzzled to watch a black hole’s corona suddenly vanish – and if that wasn’t weird enough, it reappeared a few months later.

Could there be a tiny black hole hiding in our own backyard? It’s been suggested that the hypothetical Planet Nine is actually a black hole, and now astronomers have proposed how we might find it in the next few years, using an upcoming telescope.

Astronomers have observed a bright flash of light from space, which appears to have come from a collision between two black holes. And that’s surprising, considering that black holes are famously dark objects.

In an experiment, scientists at the University of Glasgow have confirmed a half-century-old theory previously thought impossible to test, which claims a super-advanced alien civilization could use a black hole as an energy source.

The LIGO-Virgo collaboration has reported a very strange gravitational wave signal. This signal appears to have come from a black hole swallowing some unknown object, with a mass that sits in a range thought to be empty.