The English version. The Norwegian version. Once a year, more precicely on August 12., the Earth enters the dust cloud of Comet Swift Tuttle. Tens of meteors an hour seem to radiate from the constellation Perseus. The finest meteors show colours such as green, yellow or red.
Many meteors have persistent trains, and the brightest can cast a shadow on the ground.
In a meteor shower, the meteors seem to radiate from a small area in the sky. Similar events occur throughout the year, for instance on some days near December 13th and January 4th. The Meteor showers are mainly dust particles from comets that have disintegrated. The particles move in almost parallell paths, and when they hit the atmosphere, they seem to radiate from a point in the sky. Something similar happens when you drive a car through driving snow.