Imperatriz | |
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State | |
Country | |
Capital | |
Population | 251468 |
Imperatriz is the second most populated city in the northeastern Brazilian state of Maranhão. The city extends along the right bank of the Tocantins River and is crossed by the Belém-Brasília Highway, standing on the border with the state of Tocantins.
Aurora | |
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State | Missouri |
Country | United States |
Capital | |
Population | 7377 |
Postcode | 65605 |
An aurora (plural: auroras or aurorae), sometimes referred to as polar lights (aurora polaris), northern lights (aurora borealis), or southern lights (aurora australis), is a natural light display in the Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic).
Auroras are the result of disturbances in the magnetosphere caused by solar wind. These disturbances are sometimes strong enough to alter the trajectories of charged particles in both solar wind and magnetospheric plasma. These particles, mainly electrons and protons, precipitate into the upper atmosphere (thermosphere/exosphere).
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