From which countries is the aurora borealis visible?
An��aurora��(pl:��auroras��or��aurorae),��also commonly known as the��polar lights,��is a natural light display in��Earth's sky, predominantly seen in��high-latitude regions��(around the��Arctic��and��Antarctic). Auroras display dynamic patterns of brilliant lights that appear as curtains, rays, spirals, or dynamic flickers covering the entire sky.
 Auroras are the result of disturbances in the��magnetosphere��caused by the��solar wind. Major disturbances result from enhancements in the speed of the solar wind from��coronal holes��and��coronal mass ejections. These disturbances alter the trajectories of��charged particles��in the magnetospheric plasma. These particles, mainly��electrons��and��protons,��precipitate��into the upper atmosphere (thermosphere/exosphere). The resulting��ionization��and excitation of atmospheric constituents emit light of varying colour and complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the precipitating particles.
 In northern��latitudes, the effect is known as the aurora borealis or the northern lights. The former term was coined by��Galileo��in 1619, from the��Roman��goddess of the dawn��and the��Greek��name for the north wind.��The southern counterpart, the aurora australis or the southern lights, has features almost identical to the aurora borealis and changes simultaneously with changes in the northern auroral zone.��The aurora australis is visible from high southern latitudes in��Antarctica,��Chile,��Argentina,��South Africa,��New Zealand��and��Australia. The aurora borealis is visible from areas around the Arctic such as��Alaska, the��Canadian Territories,��Iceland,��Greenland,��Norway,��Sweden,��Finland��and��Siberia. On rare occasions the aurora borealis can be seen as far south as the Mediterranean and the southern states of the US.
The aurora borealis is visible from areas around the Arctic such as��Alaska, the��Canadian Territories,��Iceland,��Greenland,��Norway,��Sweden,��Finland��and��Siberia. On rare occasions the aurora borealis can be seen as far south as the Mediterranean and the southern states of the US.