Category: Cosmos
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Ocean. Rogue waves. Darkness.
Rogue waves are extremely high ocean waves that exceed the significant wave height by more than a factor of 2. Extreme waves are also very rare; less than one in 100,000 waves exceeds the rogue wave criterion. While their existence was long disputed throughout the 1990s, thousands of rogue waves have been recorded on oil…
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Ancient cities, long gone. Microbes. Architects.
When snorkelers discovered what appeared to be ancient stonework off the coast of the Greek island of Zakynthos in 2013, archaeologists sent to the site thought the odd rocks might be the ruins of an ancient city. But among the columns, bagel-shaped rings and paving stone‒like rocks, they found no telltale pottery shards or other…
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Solid fluids. Beginning of the Universe. Unity of the cosmos.
A solid material that conducts electricity perfectly at certain temperatures may also qualify as an almost perfectly flowing liquid. If the result is confirmed, the superconducting material would become the first nearly perfect fluid that isn't among the hottest or coldest substances in the universe. The result also suggests a new way of deciphering a…
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Perception. Being inside. Being outside. A comet's tail...
The European Space Agency's Rosetta mission has sent back some amazing photos as it approaches comet 67P/Churyumov-Gerasimenko comet and prepares to land on its surface. But we have a question: Where's the tail? Gerhard Schwehm, former manager of the Rosetta mission, tells Popular Science that the tail as we see it from Earth looks very…
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