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“In a hundred years or so Martians will be eagerly collecting up all this stuff and either putting it on display in museums or making it into ‘historical jewellery’,” tweeted amateur astronomer Stuart Atkinson. The accumulating trash left behind by Perseverance is considered a small price to pay for the rover’s noble scientific goals of searching for biosignatures of ancient microbial life forms.Īnd these items may one day become valuable artifacts for future Mars colonists. It was probably carried away by wind, like a piece of a thermal blanket that might have come from the rocket-powered landing system, which was spotted last month.
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The bundle of debris was first spotted on July 12 by the rover’s front left hazard avoidance camera – but when Perseverance returned to the same spot four days later, it was gone. “Note that we don’t have confirmation that it’s one or the other,” he added. “We have been discussing where it’s from, but there’s been speculation that it’s a piece of cord from the parachute or from the landing system that lowers the rover to the ground,” a spokesman for NASA’s Jet Propulsion Laboratory told AFP. Explorations of new avatars of the mysterious "moonshine" relating (mock) modular forms, sporadic simple groups, algebraic geometry, and string vacua has been a subject of significant recent interest at Stanford.WASHINGTON (AFP) – Is it tumbleweed? A piece of fishing line? Spaghetti?Ī tangled object discovered by NASA’s Mars Perseverance rover has intrigued space watchers, leaving some musing tongue-in-cheek about the quality of Italian dining on the Red Planet.īut the most plausible explanation is more prosaic: it’s likely remnants of a component used to lower the robotic explorer to the Martian surface in February 2021. In some theories, the strings could grow. The "D-duality" relating strings on negatively curved spaces to supercritical string theory was first described at Stanford. In a string theory, elementary particles are described by tiny one- dimensional objects in a multi-dimensional space. Mysterious dualities lie at the foundation of many new discoveries in string theory and its interaction with mathematical physics. Kallosh was involved with this subject since its inception and has contributed many conjectures and results. These include foundational studies of the structure of Calabi-Yau flux vacua, as well solutions involving strings on spaces of negative curvature.Ī major direction in recent years is the exploration of finiteness properties of supergravity. It contains also a large set of problems, as well as chapters on black-hole microstate. Certainly it is, mathematically, a structure that contains in various limits a plethora of quantum field. Stanford theorists ( Kachru, Silverstein) led the development of techniques to find concrete candidate "flux vacua" in the landscape of string theory, and explore their mathematical structure. by Elias Kiritsis, (Princeton University Press, 2007, Errata) This book is an up to date presentation of the main parts of modern string theory, targeting specialized students and postdocs entering or working in string theory. String theory is a theory in fundamental physics. Theorists presently at Stanford ( Kachru, Shenker) were involved with the discovery of exactly solvable models of conformal field theory in two dimensions soluble models of string theory in d<2 dimensions and the first techniques to find exact solutions of 4d N=2 supersymmetric field theories using string dualities and the geometry of Calabi-Yau singularities. One direction has involved the exploration of exactly soluble models. The research of our group covers a broad spectrum of topics in the area of theoretical elementary particle physics, e.g. Theorists at Stanford have contributed to some fascinating developments in this area. Development of understanding of the mathematical structures underlying quantum field theories and string theories in their own right has thus often had fruitful applications. These subjects underlie our descriptions of phenomena across a range of energy scales, from condensed matter physics and particle physics at accessible energies, to more speculative thoughts about early-universe cosmology and physics of the Big Bang and Black Holes. The study of the formal and mathematical structure of quantum field theory and string theory has undergone a renaissance in recent decades.