gravitational waves

Astronomers have detected the final piece of the gravitational wave trifecta – a black hole swallowing a neutron star. Two separate events rolled in just days apart, with the black holes gobbling up the stars like Pac-Man rather than Cookie Monster.

With elusive dark matter continuing to evade detection, scientists are having to search in stranger and stranger places. In a new study, physicists at MIT have studied the spins of black holes for signs of drag from dark matter slowing them down.

In January scientists reported the detection of very low-frequency gravitational waves. Now astrophysicists have investigated two possible sources – the universe cooling down after the Big Bang, and a field of particles that could be dark matter.

Last year gravitational waves were detected from a massive black hole collision. But now astrophysicists propose a new explanation: a collision of two boson stars – hypothetical, invisible objects that could help untangle the mystery of dark matter.

The gravitational waves we’ve detected so far have been like tsunamis in the spacetime sea. Now, a 13-year survey of light from pulsars scattered across the galaxy may have revealed the first hints of gentle gravitational wave background signals.

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.

Classical physics describes how large objects and systems work on an everyday scale, while quantum physics describes the “spooky” subatomic world. Now scientists have observed a rare crossover where a quantum fluctuation affected a macroscale object.

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.

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.

For the first time, scientists have managed to pick up higher harmonics in gravitational waves. After a round of upgrades The LIGO and Virgo gravitational wave detectors have extended their range, revealing new details about the events behind them.

Equal amounts of matter and antimatter should have been created in the Big Bang, but this would just have annihilated itself. Now, physicists have proposed a new theory that explains the mystery – and outlined how we can find direct evidence of it.

The LIGO collaboration has announced the detection of gravitational waves from a pair of neutron stars colliding. This marks just the second time ever that this kind of event has been spotted, as the smash-up sent ripples through spacetime itself.