These are organized by a classification scheme developed exclusively for Cosma. More…
polar : (a) of or relating to a geographic pole or the region around it (b) coming from or having the characteristics of such a region — Webster
Polar regions of Earth also known as Earth’s frigid zones, are the regions of Earth surrounding its geographical poles (the North and South Poles). These regions are dominated by Earth’s polar ice caps, the northern resting on the Arctic Ocean and the southern on the continent of Antarctica. — Wikipedia
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Satellites yield insight into not so permanent...
on May 20, 2019 at 11:39 am
Ice is without doubt one of the first casualties of climate change, but the effects of our warming world are not only limited to ice melting on Earth's surface. Ground that has been frozen for thousands of years is also thawing, adding to the climate crisis and causing immediate problems for local communities. […]
Lunar South Pole Atlas—a new online reference...
on May 17, 2019 at 5:29 pm
The Lunar and Planetary Institute (LPI), managed by Universities Space Research Association (USRA), has compiled and made available an atlas of the Moon's south pole. Given NASA's recent direction to implement Space Policy Directive-1 landing astronauts at the south pole by 2024, the LPI has compiled a series of maps, images, and illustrations designed to provide context and reference for those interested in exploring this area. […]
Extraordinarily transparent compact metallic...
on May 17, 2019 at 1:30 pm
In materials science, achromatic optical components can be designed with high transparency and low dispersion. Materials scientists have shown that although metals are highly opaque, densely packed arrays of metallic nanoparticles with more than 75 percent metal by volume can become more transparent to infrared radiation than dielectrics such as germanium. Such arrays can form effective dielectrics that are virtually dispersion-free across ultra-broadband ranges of wavelengths to engineer a […]
Cell polarity: An aurora over the pole
on May 17, 2019 at 12:58 pm
Even before the fertilised egg or zygote can start dividing into daughter cells that form the future tissues and organs during the development of a multicellular organism, the symmetrical zygote needs to become asymmetrical or polarised in shape and molecular organisation. The master switch that triggers the symmetry breaking process in the zygotes of the nematode worm, Caenorhabditis elegans (C. elegans), was identified in a recent study, led by Assistant Professor Fumio Motegi, Principal […]
24 percent of West Antarctic ice is now unstable:...
on May 16, 2019 at 3:50 pm
By combining 25 years of European Space Agency satellite altimeter measurements and a model of the regional climate, the UK Centre for Polar Observation and Modelling (CPOM) have tracked changes in snow and ice cover across the continent. […]