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Earlier this year, the Chinese Space Agency (CNSA), the Chinese space agency, managed to land a spacecraft away from the moon. The vehicle Chang & # 39; e 4 and the rover Yutu-2 appeared in the pictures. published by the Asian body in the midst of the unexplored landscape of our natural satellite. Contrary to what has been presented by NASA, the Soviet Union and even China during missions in recent decades, the moon appears redder in the more recent images of Chang & # 39; e 4. Why this does it occur?
Contrary to what some people say. Conspiracy theories, there is a fairly simple scientific answer to that, and no, the moon does not have a reddish surface like it's the case with Mars. Part of the question is how cameras are designed to capture light and turn the capture of images into digital photographs. In modern cameras, those who do not use more film, there is a separation between different types of waves, for example distinguishing between red, blue and green (the so-called RGB, abbreviations red, blue and green).
O Phys.org staff performed a chromatic badysis of the images presented in the raw versions, that is, those with pure configurations of the way they were taken, without any type of compression or adjustment. In the image histograms, separated into red, blue and green, you can see that the camera has been able to capture more red than the other two colors. This shows that even if there is a color balance even from the other side of the moon, the camera has not been able to detect the best balance.
In other words There was only a manual color adjustment to get closer to the new reality pictures of what you would see there.
Photo taken from the probe on the moon (Photo: CSNA / Phis.org)
A more critical reader might say that we are comparing the colors of the photos based on what NASA had shown previously, with the Apollo Missions of the 1960s and 1970s, believing that the Moon is grayer than reddish. What happens is that Apollo astronauts took some kind of color ruler to compare what the cameras could absorb with the colors as they were absorbed by cameras here on Earth.
In this way, the NASA treatment team would have a rule as a parameter and to achieve the ideal settings, thus revealing photos with the greatest fidelity possible true colors of our natural satellite . (19659010) However, this should not be perceived as a problem for the CNSA because the mission's proposal was not for scientific dissemination or demonstration of the country's technological power, as was the case with NASA during the race. to space. The Chang & # 39; e 4 expedition is exploratory and the Yutu-2 rover uses an infrared sensor to identify lunar soil.
Source: Phys.org
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