Alaska

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[Earth]

Where Do Tsunamis Come From?

Tsunamis are mostly provoked by underwater earthquakes and underwater volcanic eruptions, which sharply raise or lower the seabed and, as a result, move huge masses of water. Until now, the mechanisms of the tsunami have not been thoroughly studied, and it is often difficult to detect an approaching dangerous wave since at first, it is not high enough to start sounding the alarm.

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[Sky]

Meet Nacreous Clouds

Nacreous clouds are a real miracle of the northern latitudes. Nacreous clouds are one of the most beautiful, unusual, and rare natural phenomena. They appear at an altitude of 15 to 27 km at abnormally low temperatures. The best time for observation is at dusk, from the moment the sun sets visibly beyond the horizon line to the moment its center plunge 6 ° below the horizon line.

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