In the colossal Pinwheel galaxy, 25 million light-years away, a star has just exploded and is even visible through small telescopes. The supernova-hunting astronomer Koichi Itagaki discovered the ...
Astronomers are uncovering vast, wheel-shaped structures in the cosmos that challenge long-held ideas about how galaxies grow and evolve. From a nearby spiral that unfurls like a cosmic pinwheel to a ...
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