Wednesday 30 August 2017

Environmental chemist flashes warning light on new nanoparticle

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Layered BP's cytotoxicity is based on the fact that it generates reactive oxygen species (ROS), scientists have found. ROS are among the most potent cell-damaging agents known. Layered BP also disrupts cell membrane integrity in a particle-size-dependent manner.
via Science Daily

Trilobites: Casting Light on Mystery of a Star That Vanished After 14 Days

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First spotted by Korean astronomers in 1437, scientists have found it again in the form of a violent star system that experienced a nova explosion.
via New York Times

Artificial intelligence analyzes gravitational lenses 10 million times faster

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Researchers have for the first time shown that neural networks -- a form of artificial intelligence -- can accurately analyze the complex distortions in spacetime known as gravitational lenses 10 million times faster than traditional methods.
via Science Daily
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Scientists recover nova first spotted 600 years ago by Korean astrologers

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A new study pinpoints the location of a nova first spotted by Korean astrologers almost 600 years ago that now undergoes smaller-scale 'dwarf nova' eruptions. The work supports that idea that novae go through a very long-term life cycle after erupting, fading to obscurity for thousands of years, and then building back up to become full-fledged novae once more.
via Science Daily
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Chemist synthesizes pure graphene

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A chemist has patented a one-of-a-kind process for exfoliating graphene in its pure (unoxidized) form, as well as manufacturing innovative graphene nanocomposites that have potential uses in a variety of applications, including desalination of brackish water.
via Science Daily

Silicon solves problems for next-generation battery technology

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Silicon -- the second most abundant element in the earth's crust -- shows great promise in Li-ion batteries, according to new research. By replacing graphite anodes with silicon, it is possible to quadruple anode capacity.
via Science Daily

Huge hidden reservoirs of turbulent gas in distant galaxies

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ALMA has been used to detect turbulent reservoirs of cold gas surrounding distant starburst galaxies. By detecting CH+ for the first time in the distant universe this research opens up a new window of exploration into a critical epoch of star formation. The presence of this molecule sheds new light on how galaxies manage to extend their period of rapid star formation.
via Science Daily
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What lit up the universe? Black holes may have punctured darkened galaxies, allowing light to escape

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Researchers have a new explanation for how the universe changed from darkness to light. They propose that black holes within galaxies produce winds strong enough to fling out matter that punctures holes in galaxies, allowing light to escape.
via Science Daily
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NASA's Lunar mission captures solar eclipse as seen from the moon

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LRO captured an image of the Moon's shadow over a large region of the United States, centered just north of Nashville, Tennessee.
via Science Daily
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Space-inspired Star Storm to premiere next month

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Star Storm, an explosive performance inspired by stellar processes in the Universe, will be premiered at the 2017 Ars Electronica Festival in Linz, Austria, on 10 September.


via ESA Space Science
http://www.esa.int/Our_Activities/Space_Science/Space-inspired_Star_Storm_to_premiere_next_month

Forty Years of Voyager

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Long after they have stopped communicating with Earth, the twin Voyager spacecraft will forever drift among the stars.
via New York Times

Panoramic Eclipse Composite with Star Trails

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What was happening in the sky during last week's total solar eclipse? This featured little-planet, all-sky, double time-lapse, digitally-fused composite captured celestial action during both night and day from a single location. In this 360x180 panorama, north and south are at the image bottom and top, while east and west are at the left and right edges, respectively. During four hours the night before the eclipse, star trails were captured circling the north celestial pole (bottom) as the Earth spun. During the day of the total eclipse, the Sun was captured every fifteen minutes from sunrise to sunset (top), sometimes in partial eclipse. All of these images were then digitally merged onto a single image taken exactly during the total solar eclipse. Then, the Sun's bright corona could be seen flaring around the dark new Moon (upper left), while Venus simultaneously became easily visible (top). The tree in the middle, below the camera, is a Douglas fir. The images were taken with care and planning at Magone Lake in Oregon, USA.

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