Dune Image
LINK ===> https://shurll.com/2tkAgP
Planetary scientists have captured an image of near-perfectly circular sand dunes on the surface of Mars. While sand dunes across the Red Planet come in a wealth of shapes and sizes, such well-defined circles are unusual.
The slight asymmetry in the sand dunes shows their steep sides are orientated towards the south. The University of Arizona, which operates the High-Resolution Imaging Experiment (HiRise) camera used to take the image, pointed out in a statement (opens in new tab) that this indicates sands are blown southwards, though the Martian winds may be variable.
The image was taken on November 22, 2022, at a latitude of 42.505 degrees and a longitude of 67.076 degrees. It comes as part of a series of pictures taken by the HiRise camera that orbits Mars on the Mars Reconnaissance Orbiter (MRO) spacecraft.
The collection of images is being used to monitor how frost recedes and melts on the Martian surface as the Red Planet reaches the end of its winter season. Illustrating this, while this image appears frost-free a similar image of the same sand dunes previously taken shows what they looked like while still covered in frost.
This is just one of 60 sites on Mars being monitored by HiRise. The high-resolution camera has been orbiting the Red Planet since the MRO reached Mars in 2006 and began conducting the first dedicated survey of the planet's sand dunes.
Collecting repeated observations of sand dunes over the Martian year (lasting 687 Earth days) has allowed planetary scientists to monitor how fast the dunes move. This has revealed that sand dunes from the equator to the poles are advancing at rates of up to 3.3 feet (1 meter) per Martian year.
The camera has recorded a variety of Martian sand dunes with an impressive range of both sizes and shapes, revealing a great deal about weather conditions on the Red Planet. For example, while examining the Lyot Crater in the northern lowlands of Mars in 2010, HiRise imaged dune fields that indicated how local winds are channeled through the topology of this 146-mile-wide (236-kilometer) complex impact crater.
HiRise is also conducting ongoing research that looks at glacier-like formations across Mars and examines the crevasse-type fractures that punctuate their surfaces. By collecting repeated observations over time, the images can help scientists determine the kind of fracture mechanics that occur in so-called \"viscous flow features\" found at the bases of slopes on Mars. These deposits are believed to have once been rich in ice, but the source of this ice is thus far a mystery, according to NASA. (opens in new tab)
On December 21, 2010, the primary mission of the MRO ended five years and six months after its launch on August 12, 2005. This new image shows that even 12 years after the end of that mission the contribution to science made by the spacecraft and its HiRise camera is far from over.
A.I. programs that generate images, like Midjourney, train on data sets of billions of images with descriptive text captions. They look at the relationship of each image to its caption, as well as similarities from image to image and description to description, building a compressed model that is able to associate from words to pictures.
Tan, linear dunes at image center (on the south side of the Irtysh River) dominate the view. The dunes are formed from mobile barchan (crescent-shaped) dunes moving from left to right in this view. The barchans eventually merge to form the large, linear dunes which can reach 50 to 100 meters (165 to 330 feet) in height. Sand moving along the southern edge of the field appears to be feeding a southeastern lobe with a separate population of linear dunes (image lower right).
The Burqin-Haba River-Jimunai Desert area also includes darker gravel-covered surfaces that form pavements known locally as gobi. At the resolution of an astronaut photograph, these are somewhat indistinguishable from the vegetated areas arresting some of the dunes. But gobi tend to be located on the flat regions between the dunes.
Astronaut photograph ISS028-E-44444 was acquired on September 8, 2011, with a Nikon D2Xs digital camera using a 180 mm lens, and is provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Center. The image was taken by the Expedition 28 crew. The image has been cropped and enhanced to improve contrast. Lens artifacts have been removed. The International Space Station Program supports the laboratory as part of the ISS National Lab to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. Caption by William L. Stefanov and M. Justin Wilkinson, Jacobs/ESCG at NASA-JSC.
This photograph taken by an astronaut on the International Space Station highlights a sand dune field within the Burqin-Haba River-Jimunai Desert near the borders of China, Mongolia, Russia, and Kazakhstan.
The larger dunes maintain their shape and size well enough to be identified in these images taken nine years apart. The 2003 image (middle) was obtained from Google Earth (2013 CNES/Spot Image, 2013 DigitalGlobe), while the 2013 photo (lower) was taken by an astronaut onboard the ISS. Comparison of the 2003 and 2013 images shows that five larger dunes appear to have moved, as seen against fixed points such as hills and channels. Measurements show that the dunes have moved hundreds of meters (#1 moved 316 meters, #2 moved 275 m, #3 moved 405 m, #4 moved 318 m, and #5 moved 381 m). Arrows show the direction and distance of movement.
The opportunities for comparisons of the landscape are growing with each new year that we send humans and satellites into space. The imagery is quite valuable to remote-sensing scientists. For example, where large masses of sand move across highways or into farm fields, as is common on the edges of deserts, they cause great environmental damage and cost. With comparative imagery, it is now possible to predict when dunes are likely to cause such damage so that mitigation efforts can be put in place.
Astronaut photograph ISS034-E-70070 was acquired on January 6, 2013, with a Nikon D3X digital camera using an 800 millimeter lens, and is provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Center. The image was taken by the Expedition 34 crew. It has been cropped and enhanced to improve contrast, and lens artifacts have been removed. The International Space Station Program supports the laboratory as part of the ISS National Lab to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. Caption by M. Justin Wilkinson, Jacobs at NASA-JSC.
This VIS image is located in Kaiser Crater and shows several regions of sand dunes located on the southern part of the crater floor. The crater floor is visible between the dunes, indicating that there is a limited sand supply creating the dunes. These dunes are composed of basaltic sand that has collected in the bottom of the crater. The topographic depression of the crater forms a sand trap that prevents the sand from escaping. Dune fields are common in the bottoms of craters on Mars and appear as dark splotches that often lean up against the downwind walls of the craters. Dunes are useful for studying both the geology and meteorology of Mars. The sand forms by erosion of larger rocks, but it is unclear when and where this erosion took place on Mars or how such large volumes of sand could be formed. Local winds continue to move the sand dunes across the crater floor. There are two sides to a dune, the low angle slope of the windward face and the high angle slope of the leeward side. The steep side is called the slip face. Wind blows sand grains up the low angle slope of the dunes which then \"fall down\" the slip face. In this way the whole dune moves towards the slip face. The winds blow from the windward to the leeward side of the dunes. In this image the slip faces are on the left side of the dune, so the dunes are slowly moving to the left side of this image. Kaiser Crater is 207km in diameter (129 miles) and is located in Noachis Terra west of Hellas Planitia.
A new image from Denis Villeneuve's Dune has been released. The director has also provided some more insight into Timothee Chalamet's Paul Atreides character. We've been seeing a lot of official images from the upcoming big screen adaptation of Frank Herbert's iconic source material, which means that a trailer is probably on the way, although that has yet to be confirmed by the studio just yet.
The new image from Dune focuses on Timothee Chalamet's Paul Atreides character. He's crouching down with two weapons in his hand as he looks forward. It's not clear what is happening in this particular scene, but director Denis Villeneuve did provide some background information about the character. He had this to say.
Denis Villeneuve has already teased that his take on Dune is going to be Star Wars for adults. That comment caused a stir when the movie was in development, but even George Lucas says his movies and stories were made for children and Villeneuve knows this. Regardless, we're all getting anxious to see the first official footage from his vision. Hopefully it drops soon. In the meantime, you can check out the latest Dune image below, thanks to Empire Online. 59ce067264
https://www.landmarksdesign.com/forum/untitled-category-2/tamil-dubbed-movies-free-download