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Home > All Images > 2004 > February > 19 Feb 2004

Images Dated 19th February 2004

Available as Framed Prints, Photos, Wall Art and Gift Items

Choose from 35 pictures in our Images Dated 19th February 2004 collection for your Wall Art or Photo Gift. Popular choices include Framed Prints, Canvas Prints, Posters and Jigsaw Puzzles. All professionally made for quick delivery.


Artwork of the celestial northern hemisphere Featured 19 Feb 2004 Print

Artwork of the celestial northern hemisphere

Northern hemisphere stars. Computer artwork of the brightest stars visible in the northern hemi- sphere, with lines of latitude (circles) and longitude (radii). The star clouds of the Milky Way appear as grey areas. The celestial north pole (which lies over Earth's north pole) is at centre, with the celestial equator forming the outermost circle. As the Earth spins during the night, an observer would see the stars apparently moving in circles around the north pole. The bright star near the north pole is Polaris, the Pole Star; it is a valuable aid to navigation because it hardly moves at all. (See image R800/154 for the southern hemisphere)

© JULIAN BAUM/SCIENCE PHOTO LIBRARY

Artwork of ancient Mars with water on its surface Featured 19 Feb 2004 Print

Artwork of ancient Mars with water on its surface

Ancient Mars. Computer artwork of Mars at least 3 billion years ago, with its moon Phobos (at upper centre). The surface environment of ancient Mars may have allowed life forms to develop. Ancient Mars was warm, with seas covering much of its surface; it also had a thick atmosphere (blue). Water exists on modern Mars only as ice on the surface in polar regions, underground or as vapour or ice crystals in the atmosphere. The atmospheric pressure of modern Mars is only 0.6% that of Earth's, and the average surface temperature is -33 degrees Celsius. This means that it is very unlikely that life still exists on Mars. Phobos was probably an asteroid that Mars captured

© JULIAN BAUM/SCIENCE PHOTO LIBRARY