Black Holes
Shortly Before They Collided, two Black Holes Tangled Spacetime up Into Knots
An international team led from Cardiff University has confirmed that black hole binaries experience precession.
A Black Hole Burps out Material, Years After Feasting on a Star
When observing a black hole that devoured a star three years earlier, an international team of astronomers noticed it "burping"…
The Milky Way is Surrounded by a Vast Graveyard of Dead Stars
Astronomers have mapped the location of the Milky Way's black holes and neutron stars.
There’s a Blob of Gas Orbiting Around the Milky Way’s Supermassive Black Hole
Sagittarius A* (Sag A) is usually a pretty quiet object, as supermassive black holes go. It's not wildly active, like…
Astronomers Find a Sun-like Star Orbiting a Nearby Black Hole
Using data from the Gaia Observatory, a team of astronomers has detected a Sun-like star that co-orbits with a dormant…
Colliding Black Holes Provide Another way to Measure Distance in the Universe
Astronomers can use the gravitational waves of merging black holes to measure cosmic expansion.
Astronomers Have Revealed a Black Hole's Photon Ring for the First Time
Using data from the Event Horizon Telescope, a team of astronomers have calculated the photon ring of M87*.
Primordial Black Holes Could Have Triggered the Formation of Supermassive Black Holes
Computer simulations show the role primordial black holes may have played in the early universe, but the process isn't clear…
A Dormant Black Hole has Been Discovered Just Outside the Milky Way
What happens when a massive star dies? Conventional wisdom (and observational evidence) say that it can collapse to form a…
We Finally Know Where the Highest Energy Cosmic Rays are Coming From: Blazars
Way out there in space is a class of objects called blazars. Think of them as extreme particle accelerators, able…