Observatoire des droits humains (anglais seulement)

Egg-shaped galaxies may be aligned to the black holes at their hearts, astronomers find

(Version anglaise seulement)

par David Parkinson, Research Scientist in Astrophysics, The University of Queensland
Jeffrey Hodgson, Assistant Professor in Astrophysics, Sejong University

Black holes don’t have many identifying features. They come in one colour (black) and one shape (spherical).

The main difference between black holes is mass: some weigh about as much as a star like our Sun, while others weigh around a million times more. Stellar-mass black holes can be found anywhere in a galaxy, but the really big ones (known as supermassive black holes) are found in the cores of galaxies.

These supermassive behemoths are still quite tiny when seen in cosmic perspective, typically containing only around 1% of their host galaxy’s mass and extending only…

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