Wednesday’s magnitude 7.3 earthquake off Alaska’s Aleutian Islands chain struck in a region that has experienced a handful of powerful quakes within the last five years.

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The U.S. Geological Survey said the quake hit around midday about 130 miles south of Punta Burica at a preliminary depth of 6 ...

The fireball is presumed to be from a meteor fragmenting in the sky, according to meteorologists and other experts.

Scientists for the first time have detected a slow slip earthquake in motion during the act of releasing tectonic pressure on a major fault zone at the bottom of the ocean.