Tuesday 15 November 2016

Cosmic ‘barcode’ from distant galaxy confirms Nature’s constancy

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Astronomers have precisely measured the strength of a fundamental force of Nature in a galaxy seen eight billion years in the past. Researchers have confirmed that electromagnetism in a distant galaxy has the same strength as here on Earth.
via Science Daily
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NASA finds unusual origins of high-energy electrons

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High above the surface, Earth's magnetic field constantly deflects incoming supersonic particles from the sun. These particles are disturbed in regions just outside of Earth's magnetic field - and some are reflected into a turbulent region called the foreshock. New observations from NASA's THEMIS mission show that this turbulent region can accelerate electrons up to speeds approaching the speed of light. Such extremely fast particles have been observed in near-Earth space and many other places in the universe, but the mechanisms that accelerate them have not yet been concretely understood.
via Science Daily
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NASA space telescopes pinpoint elusive brown dwarf

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In a first-of-its-kind collaboration, NASA's Spitzer and Swift space telescopes joined forces to observe a microlensing event, when a distant star brightens due to the gravitational field of at least one foreground cosmic object. This technique is useful for finding low-mass bodies orbiting stars, such as planets. In this case, the observations revealed a brown dwarf.
via Science Daily
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Cold Weather Delayed over North America

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Zazzle Space Gifts for young and old

In practice: Are physicists architects of science?

Cosmic whistle packs a surprisingly energetic punch

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Astronomers have discovered that the mysterious "cosmic whistles" known as fast radio bursts can pack a serious punch, in some cases releasing a billion times more energy in gamma-rays than they do in radio waves and rivaling the stellar cataclysms known as supernovae in their explosive power. The discovery drastically raises the stakes for models of fast radio bursts and is expected to further energize efforts by astronomers to chase down and identify long-lived counterparts to fast radio bursts using X-ray, optical, and radio telescopes.
via Science Daily
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Graphene plasmons reach the infrared

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The highest plasmon energy ever observed in graphene plasmons has now been demonstrated by scientists, bringing graphene into the regime of telecommunication applications.
via Science Daily

2-D material a brittle surprise

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An atom-thick material being eyed for flexible electronics and next-generation optical devices is more brittle than researchers expected, a new report outlines.
via Science Daily