Mount Etna Spews Volcanic Vortex Rings Into Italy’s Sky
by For just over a week, Mt. Etna, one of Europe’s most active volcanoes, has been spewing circular, mostly white smoke rings into the skies over …
Tag: Mount
Blowing ‘smoke’: Mount Etna puts on a show by emitting rare rings into the sky
Tourists in Italy have been treated to quite the show as Mount Etna, the largest active volcano in Europe, has been blowing spectacular “smoke rings” …
As Space Threats Mount, U.S. Lags in Protecting GPS Services
The United States and China are locked in a new race, in space and on Earth, over a fundamental resource: time itself. And the United …