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Jonathan O'Callaghan

Jonathan O'Callaghan

Contributing Writer

Spheres representing black holes, with small ones on top, large ones on the bottom, and one midsize example in the middle.
astrophysics

Long-Missing Midsize Black Hole Flashes Into View

By Jonathan O'Callaghan
March 29, 2021
Read Later

Black holes seemed to come only in sizes small and XXL. A new search strategy has uncovered a black hole of “intermediate” mass, raising hopes of more to come.

An illustration of a bright blue flash in space.
astrophysics

New Kind of Space Explosion Reveals the Birth of a Black Hole

By Jonathan O'Callaghan
March 10, 2021
Read Later

A supernova-like explosion dubbed the Camel appears to be the result of a newborn black hole eating a star from the inside out.

An abstract black ball on a blue background.
Abstractions blog

In Violation of Einstein, Black Holes Might Have ‘Hair’

By Jonathan O'Callaghan
February 11, 2021
Read Later

A new study shows that extreme black holes could break the famous “no-hair” theorem, and in a way that we could detect.

Historical star chart of the constellation Monoceros.
Abstractions blog

‘Unicorn’ Discovery Points to a New Population of Black Holes

By Jonathan O'Callaghan
January 27, 2021
Read Later

Small black holes were nowhere to be found, leading astronomers to wonder if they didn’t exist at all. Now a series of findings, including a “unicorn” black hole, has raised hopes of solving the decade-long mystery.


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