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Posted by admin in Biology, Life, Science in Society, Technology on 19. Feb, 2010 | No Comments
In the latest Quest
Our changing oceans The world’s oceans are undergoing significant changes – seen in indicators such as temperature and salinity. Isabelle Ansorge and Mike Roberts explain how South Africa is involved in investigations of these changes. The meridional overturning circulation (MOC) is a system of surface and deep
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Posted by admin in Biology, Featured, Life, Science in Society, Technology on 19. Feb, 2010 | No Comments
In the latest Quest
Robots in the ocean Why do we need a global ocean observing system? by Thomas Mtsonti and Isabelle Ansorge In the past three decades, discussions of global warming have been restricted mainly to academic debates. Now, however, the same topics provide fuel for public debate and mounting pressure for increasing
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Posted by admin in Biology, Featured, Life, Science in Society on 19. Feb, 2010 | No Comments
In the latest Quest
High in the food chain – seals in the Southern Ocean The Marion Island seal populations have been studied for the last 30 years. Cheryl Tosh and Marthán Bester describe their field research. Deep in the Southern Ocean, Marion Island is a platform for breeding seals and seabirds
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Posted by admin in Biology, Environment, Featured, Life, Science in Society on 19. Feb, 2010 | No Comments
In the latest Quest
Invasive aliens in Antarctica Even the remote Antarctic continent and its sub-Antarctic islands and seas are troubled by invasive alien species. By Anne M Treasure The introduction of invasive alien species has been recognised as a major threat to biodiversity and ecosystems and the resulting effects have been
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Apr
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tagged: astronomy, Quest, Quest Interactive, Quest Science magazine, Science magazine, supernovaeNo Comments
3D simulations of exploding supernovae
To create this simulation of a huge, dying supernova, scientists used powerful supercomputers to employ a representation in 3D that allowed various multidimensional instabilities to be expressed. The simulation was created by a Princeton University-led team of researchers who found a way to make computer simulations in 3D
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Apr
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tagged: Blue Waters, Quest, Quest Interactive, Quest Science magazine, Science magazine, supercomputerNo Comments
NSF-supported Blue Waters, one of the world’s most powerful computers, is open for research
Posted by Bridget in Physics & Maths, Science in Society, Technology
Blue Waters has been configured to solve the most challenging compute-, memory-, and data-intensive problems in science and engineering National Science Foundation- (NSF) funded Blue Waters, one of the most powerful supercomputers in the world, was formally declared available for use today at the National Centre for
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2
Apr
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tagged: Climate change, greenhouse effect, NASA, Quest, Quest Interactive, Quest Science magazine, Science magazine, seasonal shiftNo Comments
Amplified greenhouse effect shifts north’s growing seasons
Posted by Bridget in Climate change, Life, Science in Society
Vegetation growth at Earth’s northern latitudes increasingly resembles lusher latitudes to the south, according to a NASA-funded study based on a 30-year record of land surface and newly improved satellite data sets. An international team of university and NASA scientists examined the relationship between changes in surface
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2
Apr
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tagged: Comet ISON, NASA, Quest, Quest Interactive, Quest Science magazine, Science magazineNo Comments
NASA’s Swift sizes up Comet ISON
Astronomers from the University of Maryland at College Park (UMCP) and Lowell Observatory have used NASA’s Swift satellite to check out comet C/2012 S1 (ISON), which may become one of the most dazzling in decades when it rounds the sun later this year. Using images acquired over
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2
Apr
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tagged: Hubble, NASA, Quest, Quest Interactive, Quest Science magazine, Science magazineNo Comments
Hubble digs up galactic glowworm
This charming and bright galaxy, known as IRAS 23436+5257, was captured by the NASA/ESA Hubble Space Telescope. It is located in the northern constellation of Cassiopeia, which is named after an arrogant, vain, and yet beautiful mythical queen. The twisted, wormlike structure of this galaxy is most
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2
Apr
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Soyuz TMA-06M spacecraft… Back safe and sound
The Soyuz TMA-06M spacecraft lies passively on its side on 16 March after bringing home Expedition 34 Commander Kevin Ford of NASA, Soyuz Commander Oleg Novitskiy and Flight Engineer Evgeny Tarelkin to a landing northeast of Arkalyk, Kazakhstan following a one-day delay due to inclement weather in the
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