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Home > All Images > 2004 > February

February Gallery

Choose from 1,139 pictures in our February collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Particle tracks Featured February Print

Particle tracks

Subatomic particle tracks. Coloured bubble chamber photograph showing tracks left by subatomic particles from a particle accelerator at CERN, the European particle physics laboratory at Geneva. A bubble chamber is a container filled with liquid hydrogen which is superheated - momentarily raised above its normal boiling point by a sudden drop in pressure in the container. Any charged particle passing through the liquid in this state leaves behind a trail of tiny bubbles as the liquid boils in its wake. The bubbles are seen as fine tracks, which show the characteristic paths of different types of particle and which are curved due to an intense applied magnetic field

© PATRICE LOIEZ, CERN/SCIENCE PHOTO LIBRARY

Mars Featured February Print

Mars

Mars. Computer artwork of the planet Mars (left), partially illuminated by the Sun (upper right). Mars is the fourth planet from the Sun, the next one out after Earth, around 78 million kilometres further out at around 228 million kilometres from the Sun. It is around half the diameter of Earth, being about 6800 kilometres across. Mars is one of the rocky planets of the inner solar system. Its surface terrain is mostly cratered, though there are rift valleys and volcanic mountains. It has a thin atmosphere of mostly carbon dioxide. Frozen water exists beneath the ice caps of frozen carbon dioxide in the polar regions, but Mars distance from the Sun makes it too cold for liquid water

© Roger Harris/Science Photo Library