When I first saw this giant rotating ice disk spotted in North Dakota this week, I assumed it had to be some kind of human-created object, perhaps a new piece by famed land artist Andy Goldsworthy. The video above was shot by retired engineer George Loegering while hiking along the Sheyenne River. He estimates the rotating disk was some 55 feet in diameter and must have been forming for some time. According to St. Paul Pioneer Press who spoke with National Weather Service hydrologist Allen Schlag:
The cold, dense air—the air pressure Saturday in nearby Fargo was a record high for the city for the month of November, according to Gust—turned the river water into ice, but since the water was relatively warm it didn’t happen all at once. Floating bits of ice got caught in the eddy and started to spin in a circle.
North Dakota retired engineer George Loegering has found a rare spinning disk of ice in the Sheyenne River, a weather phenomenon experts say likely was caused by cold, dense air, and an eddy in the river. (Nov. 26)
When a star explodes as a supernova, it shines brightly for a few weeks or months before fading away. Yet the material blasted outward from the explosion still glows hundreds or thousands of years later, forming a picturesque supernova remnant. …
Numerous specimen of the Strandbeest evolution on music of Khachaturian’s Spartacus.
It open the archives of fossils. Theo Jansen’s work since 1990. He tries to make new forms of live on beaches. His animals get their energy from the wind so they don’t have to eat. In the future he wants to put out in herds.
16th century German soldiery sure understood how to strike terror into their enemies’ hearts: the rooster-headed armored visor (ca 1530) must have been a sight to behold. Now on display at the Met in NYC (Bashford Dean Memorial Collection, Bequest of Bashford Dean, 1928)