Stars don’t always explode evenly

 Turns out “perfect spherical doom-ball” is not guaranteed. Astronomers directly caught evidence a supernova blast was lopsided.


Meet SN 2024ggi. Scientists caught it ridiculously early—about 26 hours after it was first detected—right when the blast wave was breaking out of the star’s surface. Miss that window and the clean “shape reveal” basically vanishes.
ScienceDaily


And the shape? Not a sphere.
The early explosion looked elongated—more like an olive than a ball. So the first light/matter didn’t shoot out uniformly in all directions.
ScienceDaily


“How can you tell the shape of something that far away when it’s just a point of light?”
They used spectropolarimetry—measuring polarization across wavelengths. Net polarization hints the source isn’t symmetric, letting researchers infer the explosion geometry even though you can’t “resolve” it like a normal image.
ScienceDaily


Bonus twist: as the blast expanded and started interacting with material around the star, it flattened, but kept a consistent symmetry axis—hinting there may be a common, large-scale “direction” in how many massive stars blow up.
So yeah: supernovas can be… anisotropic drama.

https://medium.com/@omarvferro

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