Wednesday 10 January 2018

New stellar streams confirm 'melting pot' history of the galaxy

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Where do the stars in our Galaxy come from? All the stars we see in the night-time sky belong to our Milky Way galaxy, and while most stars were likely born here, in the Milky Way, many appear to have originated in other galaxies and migrated to our shores. Tell-tale evidence comes from streams of stars created when small galaxies interact with the Milky Way.
via Science Daily
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Quantum Dot: Extremely bright and fast light emission

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A type of quantum dot that has been intensively studied in recent years can reproduce light in every color and is very bright. An international research team has now discovered why this is the case. The quantum dots could someday be used in light-emitting diodes.
via Science Daily

Ingredients for life revealed in meteorites that fell to Earth

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A detailed study of blue salt crystals found in two meteorites that crashed to Earth -- which included X-ray experiments found that they contain both liquid water and a mix of complex organic compounds including hydrocarbons and amino acids.
via Science Daily
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Astronomers detect 'whirlpool' movement in earliest galaxies; swirling gases soon after Big Bang

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Astronomers have looked back to a time soon after the Big Bang, and have discovered swirling gas in some of the earliest galaxies to have formed in the universe. These 'newborns' -- observed as they appeared nearly 13 billion years ago -- spun like a whirlpool, similar to our own Milky Way. This is the first time that it has been possible to detect movement in galaxies at such an early point in the universe's history.
via Science Daily
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Fast radio bursts 'twists and shouts' help scientists determine source of cosmic blasts

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Astronomers have found that the fast radio burst FRB 121102 -- a brief, gigantic pulse of radio waves from 3 billion light years away -- passes through a veil of magnetized plasma. This causes the cosmic blasts to 'shout and twist,' which will help the scientists determine the source.
via Science Daily
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Out There: Magnetic Secrets of Mysterious Radio Bursts in a Faraway Galaxy

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Black holes or neutron stars behaving wildly are the likely suspects of a repetitious burst of cosmic energy 3 billion light years away, astronomers say.
via New York Times

New oxide and semiconductor combination builds new device potential

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Researchers have now grown a 2DEG system on gallium arsenide, a semiconductor that's efficient in absorbing and emitting light. This development is promising for new electronic devices that interact with light, such as new kinds of transistors, superconducting switches and gas sensors.
via Science Daily

Black hole breakthrough: New insight into mysterious jets

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Advanced simulations created with one of the world's most powerful supercomputers show the jets' streams gradually change direction in the sky, or precess, as a result of space-time being dragged into the rotation of the black hole.
via Science Daily
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