It sounded exciting

The headline read "Rare glimpse of exploding star." The AP story (Adithi Ramakrishnan penned it) was about supernova 2021yfj, whose spectra is dominated by silicon, sulphur, and argon (not hydrogen, helium, carbon, or oxygen). This seems to imply that the outer layers of the supernova had been stripped away before it blew--which is odd, but lets us know what was underneath them.

The AP story says it is "located in our Milky Way galaxy." That sounded very interesting--IceCube looks out for neutrinos from supernovas too. Most of a supernova's neutrinos aren't very energetic ones, but they make so many that the detector should see a significant diffuse glow in the ice--provided the supernova is close enough. At least within our galaxy close enough. Did they see it?

Wait, 2021yfj? 4 years ago? I'd have heard something about this years ago, whether yes or no.

Yes. AP/Ramakrishnan screwed up. Estimated distance over 600 mega parsecs. Not anywhere nearby--200 billion light years. Our galaxy is only 100,000 across.

?

Too bad. Still, and interesting observation.