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International Year of Astronomy (IYA 2009): Selected Resources.
The article reviews web sites on general astronomy and 2009 International Year of Astronomy (IYA) such as the following, available at http://www.astronomy2009.org, 100 Hours of Astronomy available at http://www.100hoursofastronomy.org and Dark Skies ...
Mandy Taha, Joseph R. Kraus
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Entre L’Introductoire d’astronomie, première œuvre astronomique écrite en français ca 1270, et une compilation jusqu’alors inconnue des passages astronomiques de L’Image du monde, datant du premier quart du xve siècle, les traditions astronomiques latine
Pauline Lambert
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This is the first of a series of notes on the technical lexicon of Greek astronomy. Between the 5th and 4th centuries BC, in Greece, the study of the sky becomes an autonomous discipline, whose concepts and practices favour the formation of a specific ...
Luca Simeoni
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Astronomical Investigation to Verify the Calendar Theory of the Nasca Lines
As in many regions of the world, astronomy also played a major role in the ancient Peruvian cultures. However, the discussion of the astronomical relevance of the Nasca geoglyphs is very controversial.
Christiane Richter +2 more
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Indigenous astronomies and progress in modern astronomy [PDF]
18 pages; In Ray Norris and Clive Ruggles (eds), Accelerating the Rate of Astronomical Discovery (Special Session 5, IAU General Assembly, August 11-14 2009, Rio de Janeiro, Brazil).
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Astronomy in the City for Astronomy Education [PDF]
AbstractAstronomy is part of our culture. Astronomy cannot be isolated in a classroom, it has to be integrated in the normal life of teachers and students. “Astronomy in the city” is an important part of NASE (Network for Astronomy School Education) (Ros & Hemenway 2012). In each NASE course we introduce a “working group session” chaired by a local
Rosa M. Ros, Beatriz Garc
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Jets, Disks and Winds from Spinning Black Holes: Nature or Nurture?
A brief summary is given of an alternative interpretation of the Event Horizon Telescope observations of the massive black hole in the nucleus of the nearby galaxy M87. It is proposed that the flow is primarily powered by the black hole rotation, not the
Roger Blandford, Noémie Globus
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Technology Advances for Radio Astronomy [PDF]
The field of radio astronomy continues to provide fundamental contributions to the understanding of the evolution, and inner workings of, our universe.
Russell, Damon Stuart
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New features on yttria‐stabilized zirconia after exposure at 1500°C: Newly discovered pyramidal structures on an old material. After exposure at 1550°C on the cross section of YSZ new features, namely pyramidal structures are discovered. These structures grow with time, increase in numbers, appear as singularities, are often arranged in strings, and ...
Doris Sebold +2 more
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