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The northern lights, which are also known as the aurora borealis, are the result of solar storms on the Sun that rain down charged particles onto the Earth’s atmosphere.
Increased solar activity causes auroras that dance around Earth’s poles, known as the northern lights, or aurora borealis, and southern lights, or aurora australis.
A phenomenon also attracting numerous tourists is the Aurora Borealis or Northern Lights. [47] In Finnish Lapland, the number of auroral displays can be as high as 200 a year, whereas in southern Finland, the number is usually fewer than 20.
Lemström is best known on his research of aurora borealis. He had several expeditions in Finnish Lapland and even tried to create an artificial northern lights in the laboratory. [ 2 ] In 1870 Lemström studied the metric system in Paris and introduced the system to Finland.
Forecast maps show that states as far south as Massachusetts in the Northeast and Illinois and Iowa in the Midwest may be in viewing range. Aurora forecast for Friday, Oct. 4. (NOAA)
Relationship of Earth's axial tilt (ε) to the tropical and polar circles. The Arctic Circle is the southernmost latitude in the Northern Hemisphere at which the centre of the Sun can remain continuously above or below the horizon for twenty-four hours; as a result, at least once each year at any location within the Arctic Circle the centre of the Sun is visible at local midnight, and at least ...
Northern lights usually dance in the sky for a few minutes and then slither off. Sometimes a display can last around 15 to 30 minutes or even a few hours. But that is unusual.