UFO, Aliens, Aliens, Uap, Mars, Curiosity, Perseverance, early clouds, night clouds, Mark Lemmon, Boulder Space Science Institute, Odin satellite

1-PIA24622-Curiosi.2e16d0ba.width-1024.fill-1024x441-c10“Noctilucent” is a compound word of Latin origin that indicates something that shines at night. This is the case of noctilucent clouds, observed on Earth at the level of the mesosphere at an altitude of about 75-85 km and visible only after sunset, when they are illuminated by the sun that is below the horizon line. The phenomenon, on Earth, has not yet been well explained, although a Swedish satellite, Odin launched in 2001, has begun to study them. However, it is certain that they are composed of ice crystals. By a strange chance, recently they also appeared in the atmosphere of a close relative of ours: Mars. But will it really be a coincidence? Not that clouds do not exist on the Red Planet but are located at the equator in the coldest period of the year. Surprisingly, a Martian year ago, which is roughly two Earth years, scientists spotted clouds over the Curiosity rover ahead of time in late January. For this reason they immediately renamed them “early clouds”, then ascertaining that they form at higher altitudes than typical and appear as vaporous puffs full of ice crystals that disperse the light from the setting Sun, some of which are colorful and shimmering as spectacular displays. In fact, the Curiosity team has already made a new discovery: “early” clouds are actually at higher altitudes than normal Martian cloud formations that hover no more than 37 miles (60 kilometers) in the sky and are composed of water ice. However, the clouds captured by Curiosity’s cameras are located at a higher altitude, where it is very cold. E-PIA24662-Curiosity-Spots-Iridescent-Mother-.width-1024They are probably composed of frozen carbon dioxide, or dry ice. Scientists are looking for tenuous clues to determine the exact altitude and will proceed to careful analysis to ascertain which of the recent Curiosity images show clouds of water ice and which ones of dry ice. The thin, rippling structures of these clouds are easier to see with Curiosity’s black-and-white navigation cameras, but it’s in the Mastcam’s color images that their brilliance is revealed. Immediately after sunset, their ice crystals catch the light as it fades, making them glow as the sky darkens. These “noctilucent” twilight clouds increase their brightness as the crystals increase, and then darken after the position of the Sun in the sky is no longer able to illuminate them. This is a useful clue for scientists to determine its altitude. Even more striking are the iridescent or mother-of-pearl clouds. “If you see a cloud with a shimmering set of pastel colors, it’s because the cloud particles are all nearly identical in size,” said Mark Lemmon, an atmospheric scientist from Boulder, Colorado. PIA24661-Curiosity-GIF-Shows-Drifting-Clouds-Over-Mount-Sharp“This usually happens right after the clouds have formed and all grew at the same pace.” “These clouds are among the most colorful things on the Red Planet,” he added. “If you looked at the sky next to Curiosity, you could see the colors with the naked eye, albeit faint.” Lemmon added: “I always marvel at the colors that come up: reds and greens, blues and purples. It’s really nice to see something bright and colorful on Mars ”. Well, what about? Mars holds new surprises for us every day. Going forward at this rate, I do not exclude that soon somewhere on its surface appears unexpectedly, after the clouds and the water, even the air …

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aliens, Boulder Space Science Institute, Curiosity, early clouds, aliens, Mark Lemmon, Mars, night clouds, Perseverance, Odin satellite, UAP, UFO

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