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Credit: NASA and JPL-Caltech.
One of the great mysteries of modern space science is neatly summed up by the view from NASA s Perseverance, which just landed on Mars: Today it s a desert planet, and yet the rover is sitting right next to an ancient river delta.
The apparent contradiction has puzzled scientists for decades, especially because at the same time that Mars had flowing rivers, it was getting less than a third as much sunshine as we enjoy today on Earth.
But a new study led by University of Chicago planetary scientist Edwin Kite, an assistant professor of geophysical sciences and an expert on climates of other worlds, uses a computer model to put forth a promising explanation: Mars could have had a thin layer of icy, high-altitude clouds that caused a greenhouse effect.
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IMAGE: Glaucio Paulino and Emily Sanders, Georgia Institute of Technology researchers, are co-authors on the paper. view more
Credit: Candler Hobbs, Georgia Tech
A mollusk and shrimp are two unlikely marine animals that are playing a very important role in engineering. The bodies of both animals illustrate how natural features, like the structures of their bones and shells, can be borrowed to enhance the performance of engineered structures and materials, like bridges and airplanes. This phenomenon, known as biomimetics, is helping advance structural topology research, where the microscale features found in natural systems are being mimicked.
In a recent paper published by researchers at the Georgia Institute of Technology and the Pontifical Catholic University of Rio de Janeiro (Brazil), a new approach to structural topology optimization is outlined that unifies both design and manufacturing to create novel microstructures, with potential applications ranging
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IMAGE: Scientists from the Skoltech Space Center (SSC) have developed nanosatellite interaction algorithms for scientific measurements using a tetrahedral orbital formation of CubeSats that exchange data and apply interpolation algorithms to. view more
Credit: Skoltech
Scientists from the Skoltech Space Center (SSC) have developed nanosatellite interaction algorithms for scientific measurements using a tetrahedral orbital formation of CubeSats that exchange data and apply interpolation algorithms to create local maps of physical measurements in real time. The study presents an example of geomagnetic field measurement, which shows that these data can be used by other satellites for attitude control and, therefore, provided on a data-as-a-service basis. The research was published in the journal
Credit: UrFU / Victoria Maltseva.
Physicists at the Ural Federal University (UrFU, Ekaterinburg, Russia) will print unique magnets, magnetic systems, soft magnetic elements with a 3D printer. Samples made with this printer can be useful in almost any field from medicine to space. For example, it can be used by robotic surgical assistants to unclog arteries and veins or to place stents. According to Aleksey Volegov, associate professor of the Department of magnetism and magnetic nanomaterials at the UrFU, now scientists are deciding which kind of magnets they will start printing first. These will be magnets based on either samarium or cobalt compounds. They can be used in submarines, at space stations, on ships. That is, in those areas where there are very strong temperature changes and we need magnets with special properties in terms of stability, said Aleksey Volegov. Or it will be simple magnets based on an alloy of neodymium, iron, and boron, which work at normal temperatures
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VIDEO: A study conducted by researchers from the Laboratory for Planetary and Atmospheric Physics of the University of Liege, shows for the first time global views of a dawn storm, a. view more
Credit: @University of Liège
The storms, which consist of brightenings and broadenings of the dawn flank of an oval of auroral activity that encircles Jupiter s poles, evolve in a pattern surprisingly reminiscent of familiar surges in the aurora that undulate across Earth s polar skies, called auroral substorms, according to the authors.
The new study is the first to track the storms from their birth on the nightside of the giant planet through their full evolution. It was published today in