Сурет:Mars Viking 22e169.png

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Mars_Viking_22e169.png ‎(208 × 512 пиксел, файл өлшемі: 88 КБ, MIME түрі: image/png)

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Original Caption Released with NASA Image:

Photo from Viking Lander 2 shows late-winter frost on the ground on Mars around the lander. The view is southeast over the top of Lander 2, and shows patches of frost around dark rocks. The surface is reddish-brown; the dark rocks vary in size from 10 centimeters (four inches) to 76 centimeters (30 inches) in diameter. This picture was obtained September 25, 1977. The frost deposits were detected for the first time 12 Martian days (sols) earlier in a black-and-white image. Color differences between the white frost and the reddish soil confirm that we are observing frost. The Lander Imaging Team is trying to determine if frost deposits routinely form due to cold night temperatures, then disappear during the warmer daytime. Preliminary analysis, however, indicates the frost was on the ground for some time and is disappearing over many days. That suggests to scientists that the frost is not frozen carbon dioxide (dry ice) but is more likely a carbon dioxide clathrate (six parts water to one part carbon dioxide). Detailed studies of the frost formation and disappearance, in conjunction with temperature measurements from the lander’s meteorology experiment, should be able to confirm or deny that hypothesis, scientists say.
Күні 2007-07-02; original photo was taken 1977-09-25.
Көзі Own work based on images in the NASA Viking image archive
Авторы "Roel van der Hoorn (Van der Hoorn)"
Рұқсат
(Бұл файлды қайта қолдану)		 I used the original 22e169.blu, 22e169.grn and 22e169.red images from the NASA Viking image archive, converted them to .png, manually removed the noise, merged them into one image and finally increased the brightness and contrast with 20. Except for the conversion, this was all done in Adobe Photoshop CS2. The original files by NASA are in the public domain, and so is this new one.
Басқа нұсқалары I created this image as a replacement for the Viking2-PIA00573.jpg. This file was created by NASA, but the quality is not very high. Using the original pictures from the Lander archive resulted in a higher quality image.

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Public domain This work has been released into the public domain by its author, Van der Hoorn at ағылшын тілі Уикипедия. This applies worldwide.
In some countries this may not be legally possible; if so:
Van der Hoorn grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

The image is based on original images from NASA to which the following copyright statement is applicable:

Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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қазіргі22:37, 2007 ж. шілденің 422:37, 2007 ж. шілденің 4 кезіндегі нұсқасының нобайы208 × 512 (88 КБ)Van der Hoorn{{Information |Description = Original Caption Released with Image: Photo from Viking Lander 2 shows late-winter frost on the ground on Mars around the lander. The view is southeast over the top of Lander 2, and shows patches of frost around dark rocks. Th

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