Black Holes
Astronomers Precisely Measure a Black Hole's Accretion Disk
Actively feeding supermassive black holes are known as quasars, and they can outshine all the stars of their host galaxy.…
Could This Supermassive Black Hole Only Have Formed by Direct Collapse?
One of the outstanding mysteries in astronomy is how supermassive black holes gained so much mass so early in the…
Does the Milky Way's Supermassive Black Hole Have a Companion?
Astronomers have found stellar mass and supermassive black holes, but they're still on the hunt for an intermediate size; black…
How Did Supermassive Black Holes Grow So Quickly, So Early?
Supermassive black holes haunt the cores of many galaxies. Yet for all we know about black holes (not nearly enough!),…
The Milky Way’s Supermassive Black Hole had a Burst of Activity 200 Years Ago. We Just Saw the Echo.
We in the Milky Way Galaxy are pretty lucky to have a fairly quiet central supermassive black hole in Sgr…
Astronomers Have Never Detected Merging Supermassive Black Holes. That Might Be About to Change
A new study suggests that pulsars could act as natural gravitational wave sensors, setting limits on supermassive black hole mergers…
Pulsars Could Help Map the Black Hole at the Center of the Milky Way
The BlackHoleCam project, part of the Event Horizon Telescope consortium, will use the powerful EHT array to search for pulsars…
If Black Holes Evaporate, Everything Evaporates
Stephen Hawking predicted that black holes wouldn't last forever, eventually evaporating into a smear of particles. According to a new…
When Black Holes Merge, They'll Ring Like a Bell
How a merged black hole rings as it settles into a stable form holds clues to a better understanding of…
Where Are the Missing Black Holes? The Hubble May Have Helped Find One
Most black holes are stellar mass black holes. They're created when a star several times more massive than our Sun…