Black Holes
Hubble Sees Dark Shadows That Could Be Cast by a Supermassive Black Hole
We use the term 'supermassive black hole' with a kind of casual familiarity. But stop and think about what they…
Merging Black Holes and Neutron Stars. All the Gravitational Wave Events Seen So Far in One Picture
The Theory of Relativity predicted the existence of black holes and neutron stars. Einstein gets the credit for the theory…
Beyond “Fermi’s Paradox” XI: What is the Transcension Hypothesis
Could it be that the reason we haven't heard from any aliens is because they transcended and aren't interested in…
Behold! The Black Hole Collision Calculator!
A new tool called the Black Hole Collision Calculator let's users see just how powerful a collision between a black…
A ring of high-energy particles surrounding a black hole suddenly disappeared
In March 2018 astronomers watched a massive black hole surge in brightness. Then over the following year, its ring of…
What Shuts Down a Galaxy’s Star Formation?
A new study finds that while black holes drive the formation of galaxies, they are also what kills them in…
Astronomers Might Have Seen a Star Just Disappear. Turning Straight to a Black Hole Without a Supernova
A brilliant blue star has disappeared from view, which could mean it became a black hole in a novel way.
How an Advanced Civilization Could Exploit a Black Hole for Nearly Limitless Energy
A black hole as a source of energy? We know black holes as powerful singularities, regions in space time where…
New Simulations Show How Black Holes Grow, Through Mergers and Accretion
One of the most pressing questions in astronomy concerns black holes. We know that massive stars that explode as supernovae…
Black Hole Seen Blasting Out Jets at Close to the Speed of Light
The Chandra X-Ray Observatory has spotted a distant black hole shooting out jets of material, at close to the speed…