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ARCHIVES 2015, 2014
ARCHIVES 2013

Les trous noirs : leur nature, et leur rôle en physique et en astrophysique

(réunion Académie des Sciences, Février 2018) 

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151105 - NASA Mission Reveals Speed of Solar Wind Stripping Martian Atmosphere

NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) mission has identified the process that appears to have played a key role in the transition of the Martian climate from an early, warm and wet environment that might have supported surface life to the cold, arid planet Mars is today. More HERE


150128 - Rosetta data deluge reveals dynamic comet with sand dunes and jets More HERE 

 

NASA X-ray Telescopes Find Black Hole May Be a Neutrino Factory     The giant black hole at the center of the Milky Way may be producing mysterious particles called neutrinos. If confirmed, this would be the first time that scientists have traced neutrinos back to a black hole. Read more HERE 

Ecological Footprint Found to Be "Misleading"

141105 - Is humanity really using 1.5 Earths? That is the central finding of the Ecological Footprint (EF), a widely cited global sustainability indicator used by the United Nations and major NGOs around the world to estimate the impact of human activity on the biosphere. But a paper published today in PLoS Biology finds the method behind the Ecological Footprint "so misleading as to preclude its use in any serious scientific or policy context." 

Measuring the order and disorder of matter 

An editorial in Nature Materials highlights work by SFI External Professor James Crutchfield and his colleague Dowman Varn for their information-theoretic measure of material structure. Their algorithmic approach, described in an SFI working paper, aims to provide a framework for classifying “anything from perfect crystals to totally amorphous materials,” according to the editorial. 

Quantifying material order and disorder is especially relevant for materials science in 2014, which is the International Year of Crystallography.

Read the News and Views editorial in Nature Materials (November, 2014, subscription required); Read the SFI working paper (September 19, 2014

 

Novel Sodium-Conducting Material Could Improve Rechargeable Batteries More…  

Solar and Space Physics: A Science for a Technological Society: An Overview (2014)

Developing a 21st Century Global Library for Mathematics Research (2014) Buy Paperback : $43.00 ReadDownload Free PDF

Kepler Discovers First Earth-Size Planet In The 'Habitable Zone' of Another Star
Using NASA's Kepler Space Telescope, astronomers have discovered the first Earth-size planet orbiting a star in the "habitable zone" -- the range of distance from a star where liquid water might pool on the surface of an orbiting planet. FULL STORY

Nuclear Physics : Exploring the Heart of Matter

A study by the Committee on the Assessment of and Outlook for Nuclear Physics; Board on Physics and Astronomy (BPA); Division on Engineering and Physical Sciences (DEPS); National Research Council; The principal goals of the study, published in 2013, were to articulate the scientific rationale and objectives of the field and then to take a long-term strategic view of U.S. nuclear science in the global context for setting future directions for the field. Nuclear Physics: Exploring the Heart of Matter provides a long-term assessment of an outlook for nuclear physics. Download the report HERE 

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