Northern light

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. They illuminate the northern horizon as a greenish glow or sometimes a faint red, as if the sun were rising from an unusual direction. Discrete aurorae often display magnetic field lines or curtain-like structures, and can change within seconds or glow unchanging for hours, most often in fluorescent green.

I asked my penpal if the northern lights can be seen from his home in Nuuk and he sent me this as an answer. I cannot say anything else about this card but that I love it. The image says everything itself. Isn't our world wonderful enough to give us such amazing phenomena?