'One of the most geometrically perfect': What is this mysterious sphere deep in the Milky Way galaxy?

A supernova remnant (SNR) discovered by astrophysicist Miroslav Filipović of Western Sydney University displays an astonishingly spherical shape.

May 29, 2025 - 21:02
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'One of the most geometrically perfect': What is this mysterious sphere deep in the Milky Way galaxy?
A supernova remnant (SNR) discovered by astrophysicist Miroslav Filipović of Western Sydney University displays an astonishingly spherical shape.