xxx ~ ammonite pavement in Lyme Regis, Dorset, Great Britain - a World Heritage site
"Saturn, photographed by Cassini. In what some call “the most stunning photograph ever taken”, the Cassini probe captured Saturn backlit by the Sun. What's more stunning is that Earth is visible in this photo, as a tiny dot just above the rings on the left."
This picture shows the size of a sphere that would contain all of Earth's water in comparison to the size of the Earth. The blue sphere sitting on the United States, reaching from about Salt Lake City, Utah to Topeka, Kansas, has a diameter of about 860 miles (about 1,385 kilometers) , with a volume of about 332,500,000 cubic miles (1,386,000,000 cubic kilometers).
"This is What Happens When Sand Gets Struck by Lightning: Fulgurites are natural hollow glass tubes formed in quartzose sand, silica, or soil by lightning strikes (at 3,270 °F), which instantaneously melts silica on a conductive surface and fuses grains together over a period of around one second. Photographed by Ken Smith."
Patagonian Clouds - Argentina
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This specimen is sometimes called the "Pink Tutu" because of its rose quartz frill. The smoky quartz formed first, then the rose quartz. Geologists suspect the pink tint comes from traces of aluminum and phosphorus.