The eyes aboard the Mars rover Spirit are delivering ground truth.
After more than six months of examining the photographic and spectral data from the rover, Mars mission scientists confirm that the albedo -- which is the percentage of sunlight reflected on the red planets dusty surface -- indicates important variations in mineral and dust composition.
"Spirit landed in a medium brightness region of Gusev crater, and on this mission has crossed into brighter and darker areas travelling to Bonneville crater and beyond," says Jim Bell, associate professor of astronomy at Cornell University and the lead scientist on the high-resolution, color, stereo panoramic cameras, known as Pancams, carried by Spirit and its twin rover, Opportunity. Says Bell, "The albedo changes that we noticed with Pancam correlate with the changes seen from the Mars orbiters above. This is ground-truth information." (Bonneville was the first crater the rover examined after its landing.) The albedo findings are detailed in a research paper, which, along with 10 other papers resulting from Spirits journey across the Martian surface, are published this week in a special issue of the journal Science (Aug. 6, 2004). The issue, in which 120 authors -- including several from Cornell -- participate, features a 2-foot long, eight-fold poster of Pancam views of Spirits landing site in Gusev crater.
Molecule flash mob
19.01.2017 | Technische Universität Wien
Magnetic moment of a single antiproton determined with greatest precision ever
19.01.2017 | Johannes Gutenberg-Universität Mainz
An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...
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Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
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Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
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Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
19.01.2017 | Event News
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09.01.2017 | Event News
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19.01.2017 | Physics and Astronomy