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Wow.

That's one heck of a paywall. Wish I could see the images, though!

Originally saw the info on phys.org but some of the mods on this sub routinely ban posts to phys.org. Here's the news article with the images in it

Ok, so it's actually cooler than the title suggests. The gravitational lensing shows the same supernova at three points of it's life days apart - simultaneously. So three images around the galaxy at the same time, with varying degrees of brightness. Distances the light travels around the galaxy must be truly vast for such delays.

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Thanks for the English translation

Struggled with capturing the full concepts of its coolness in a post title of reasonable length