Jupiters formation linked to that of primitive meteorites
Shooting the tube in the solar nebula? This is a side view of a crashing wave of gas using color to represent density. The height of the wave is about half of the Earth-sun distance at its highest point. The gas is thrown upward as it runs into a spiral arm in the nebula, then curls over and crashes back. The black arrows show the direction of gas flow. Just as with ocean waves, as the wave breaks it forms a tube. In this case, the "tube" is nearly 1,000 Earth diameters wide.
The process that formed the giant planet Jupiter may also have spawned some of the tiniest and oldest members of our solar system -- millimeter-sized spheres called chondrules, the major part of the most primitive meteorites. As witnesses to the early history of the solar system, chondrules may provide important clues to how the planets formed.
A report of this research result, by theorists Alan P. Boss of the Carnegie Institution of Washington and Richard H. Durisen of Indiana University in Bloomington, will be published in the March 10 issue of Astrophysical Journal Letters.
Hal Kibbey | EurekAlert!
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New proton record: Researchers measure magnetic moment with greatest possible precision
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High-precision measurement of the g-factor eleven times more precise than before / Results indicate a strong similarity between protons and antiprotons
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The WHO reports an estimated 429,000 malaria deaths each year. The disease mostly affects tropical and subtropical regions and in particular the African continent. The Fraunhofer Institute for Silicate Research ISC teamed up with the Fraunhofer Institute for Molecular Biology and Applied Ecology IME and the Institute of Tropical Medicine at the University of Tübingen for a new test method to detect malaria parasites in blood. The idea of the research project “NanoFRET” is to develop a highly sensitive and reliable rapid diagnostic test so that patient treatment can begin as early as possible.
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The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...
Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.
That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...
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