Arctic Circle
Arctic Circle is an imaginary line of latitude on the Earth's surface at approximately 66.5 degrees north of the equator. It marks the southernmost point at which the sun can remain continuously above or below the horizon for 24 hours, which occurs during the summer and winter solstices respectively. In the context of space and astronautical engineering, the Arctic Circle is of interest due to its proximity to the Earth's rotational axis, which makes it an ideal location for launching rockets into polar orbits. Polar orbits are used for a variety of purposes, including Earth observation, remote sensing, and reconnaissance. The Arctic Circle is also of interest for its potential as a site for future spaceports, which could take advantage of the region's strategic location and relatively low population density.
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