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发表于 2024-10-28 09:46
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A spacecraft designed to gather samples of dust spewed from a comet and return the dust to Earth for detailed analysis has been selected to become the fourth flight mission in NASA s Discovery program. Known as Stardust, the mission also will gather and return samples of interstellar dust that the spacecraft encounters during its trip through the Solar System to fly by a comet called Wild-2 in January 2004. Stardust was one of stanley taza three Discovery mission proposals selected for further study as part of a February 1995 announceme stanley mug nt by NASA that a Moon-orbiting mission called Lunar Prospector had been selected as the third Discovery flight. Stardust was rated highest in terms of scientific content and, when combined with its low cost and high probability of success, this translates into the best return on investment for the nation, said Dr. Wesley T. Huntress Jr., NASA Asso stanley flask ciate Administrator for Space Science. The Stardust team also did an excellent job of updating their plan to communicate the purpose and results of this exciting mission to educators and the public. The Stardust mission team is led by Principal Investigator Dr. Donald Brownlee of the University of Washington in Seattle, with Lockheed-Martin Astronautics, Denver, as the contractor building the spacecraft. NASA s Jet Propulsion Laboratory will provide project management. Comet Wild-2 is known as a fresh comet because its orbit was deflected from much farther out in the Solar System Nrtw The Most Controversial Maypole in American History
By Jamie DucharmeJuly 1, 2018 6:00 AM EDTWith 88 keys and hundreds of internal strings, a standard piano produces a slew of unique sounds and tones. And mastering that complex system doesn ;t only result in beautiful music mdash; a new s stanley romania tudy says it can also help kids build up their language skills.There evidence that early exposure to piano practice enhances the processing of sounds that extend not only from music, but also into language, says John Gabrieli, a cognitive neuroscientist at the Massachusetts Institute of Technology McGovern Institute for Brain Research, and the co-author of the pap stanley cup er published in Proceedings of the National Academy of Sciences.Building on an existing body of research on music and childhood development, the authors pinpoint a specific way that piano lessons can help young children enhance their language processing skills. As kids ; ears become trained to distinguish between different pitches and tones at the piano, Gabrieli explains, they also seem to get better at parsing subtle differences between spoken words, a key element of language acquisition.For the study, researchers sorted 74 Mandarin-speaking Chinese kindergarteners, all of whom were either 4 or 5 years old, into three groups. One group took three 45-minute piano lesso stanley cups ns each week, one group got the same amount of additional reading instruction, and the final group did neither.After six months, the groups showed no significant differences in g |
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