EOS |
Astronomy
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Kepler’s war with Mars |
Kepler’s War with Mars |
“Martian sunset on sol 24 and a close-up of the sunset - The image above shows much more color variation than had previously been seen. The blue color near the Sun is not caused by clouds of water ice, but by the Martian dust itself. The dust in the atmosphere absorbs blue light, giving the sky its red color, but it also scatters some of the blue light into the area just around the Sun because of its size. The blue color only becomes apparent near sunrise and sunset, when the light has to pass through the largest amount of dust. The close up below shows the red sky in the background and the blue around the Sun approximately as they would appear to the human eye. The color of the Sun itself is not right -- the Sun was over exposed in each of the 3 color images that were used to make this picture. The true color of the Sun itself may be near white or slightly bluish.”
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Chronology of Mars Explorationfrom nasa: http://nssdc.gsfc.nasa.gov/planetary/chronology_mars.html Mission Timeline
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webpages and Eos image copyright 2020 M Nealon |
Photos: nasa
All links and photo references valid at time of writing and in future will likely never be checked to see if they are still valid. |
Hesiod, Shield of Heracles 191 ff :
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