The Halo Vault

Here are some nice ice halos at the passage of a particular layer of clouds, during a clear sky day (2023-04-04, from near Dole, Jura, Franc...

46 °  contact arcs are something of a true rarity. In the display shown above, photographed by Marco Rank yesterday in Jena, underneath t...

  About a year ago in Muonio, Finland, a diamond dust display produced a new halo, the 46° contact arcs. The display was shortly reported ...

On October 26 the pupils of the Särkijärvi school near the small northern Finland town of Muonio stopped suddenly their indoor activities...