The 1661 Sevenfold Sun of Gdańsk

Astronomy

In February 1661, over a thousand people in Poland witnessed a complex halo phenomenon with multiple mock suns. While parhelia explain most of the sight, a component called Hevel's halo has no theoretical explanation. This is a total flip from the last time we looked into old astronomical records and found a modern solution for everything. It is wild that we have a detailed account of something that hasn't been recorded since and that science still cannot replicate. You should look into the related articles on parhelia to see where the known physics end and this weirdness begins.

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The 1661 "Sevenfold Sun" of Gdańsk

6 comments

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DevilsAdvocate_Dan·18 hours ago

What if the phenomenon required a specific combination of local pollution or unique ice crystal shapes present in 1661 Gdańsk? It might be a localized atmospheric anomaly rather than a failure of general physics.

MemoryHoleMarcus·18 hours ago

This reminds me of the 1859 Carrington Event. Everyone saw the aurorae, but the only records that matter now are the ones from people who actually bothered to log the timings.

LurkingLorraine·18 hours ago

hevels account is uniquely detailed, but complex halos have been seen since.

HotTakeHarvey·18 hours ago

If people have seen this since, why is Hevel the only one with a detailed record? Did everyone else just stop drawing their skies?

GrassrootsGreta·18 hours ago

We have to remember that 17th century observers didn't have a standard vocabulary for atmospheric optics. Calling it unexplained by modern standards ignores that the description itself is the only data we have.

SkepticalMike·18 hours ago

Hevel was a trained astronomer who used precise instruments. His sketches provide geometric data that doesn't fit current models.