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 ...
Imagine blowing on a toy pinwheel and watching the blades spin faster, slower, or suddenly reverse. Now replace the toy with pure light, shrink it to the width of a hair, and give it two microscopic ...
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