|Revontulet (Aurora Borealis) - FINLAND|
Friday, June 27, 2014
Aurora Borealis - FINLAND
The second card from Marnie shows "Revontulet", the Aurora Borealis or Northern Lights, curiously the second I receive this week (luckily they're not equal). She as already saw the Aurora 4 times on her life (she lives in southern Finland so it's not so often visible as in Lapland or other northern regions). Thanks again Marnie for this beautiful card and your message (I do hope I can see this lights for real one day). This postcard took 5 days to arrive!
An aurora is a natural light display in the sky particularly in the high latitude (Arctic and Antarctic) regions, caused by the collision of energetic charged particles with atoms in the high altitude atmosphere (thermosphere). Most aurorae occur in a band known as the auroral zone, which is typically 3° to 6° in latitudinal extent and at all local times or longitudes. In northern latitudes, the effect is known as the Aurora Borealis (or the northern lights), named after the Roman goddess of dawn, Aurora, and the Greek name for the north wind, Boreas.