Meteor. Optical image of a Leonid meteor (lower centre) and star trails (curved tracks). Meteors,or shooting stars,are tiny particles of dust which enter the Earth's atmosphere with speeds of 35-95 kilometres per second. Air resistance heats the particles,making them visible as streaks of light. Star trails are produced on long-exposure photographs by the apparent motion of the stars caused by the Earth's rotation. The Leonid meteor shower occurs annually for about 2 days around 17th November when the Earth crosses the path of debris produced by the Tempel-Tuttle 1886 I comet | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Schechter, Dan |
Taille de l’image : | 4178 px × 3362 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |