Highest atmospheric phenomena

Of all the phenomena visible in our skies, the very highest are the aurorae, also known as the northern and southern lights. Often visible at night from low and high latitudes, these beautiful coloured, shimmering lights are the result of charged particles from the Sun interacting with the upper atmosphere. The lowest aurorae occur at altitudes of around 100 km (62 miles), while the highest extend up to around 400 km (248 miles).