Volcanic Smoke Rings, Mt Etna, Sicily (05Apr24)
Mount Etna Spews Volcanic Vortex Rings Into Italy’s Sky - The New York Times

Black Smoke Ring In The Sky
Looks like the Jolly Green Giant hasn't quit smoking yet. This is actually an eruption from Mt. Etna which is blowing 330 ft-wide. smoke rings
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Ring In The Sky Today
unknown photographer


Eerie Smoke Ring Halo. In the DI Cha star system, two stars of the quadruple system of two sets of binary stars beam through a smoky ring of dust that surrounds the new stars. [Learn more about binary stars.] Credit: ESA/Hubble & NASA
Light In Sky With Smoke Ring
16-year-old Georgina Heap was playing tennis with her mother when she looked up at the sky and noticed a mysterious black ring floating high in the air. The huge black ring was spotted in the skies above Leamington Spa, a spa town in central Warwickshire, England, and remained in sky for about three minutes before disappearing completely. Weather experts are baffled by what they describe as a "real-life X-Files".
Volcanic smoke rings - Mount Etna eruption










A steam ring being blown from the Bocca Nuova vent of Mount Etna, Sicily. Steam rings are generated when a pulse of steam is ejected from a near-cylindrical volcanic vent Photograph: Science Photo Library/Rex Features