Thursday, 27 April 2017

Intergalactic gas and ripples in the cosmic web

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A team of astronomers has made the first measurements of small-scale ripples in primeval hydrogen gas using rare double quasars.
via Science Daily
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Using math to investigate possibility of time travel

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After some serious number crunching, a researcher says that he has come up with a mathematical model for a viable time machine: a Traversable Acausal Retrograde Domain in Space-time (TARDIS). He describes it as a bubble of space-time geometry which carries its contents backward and forwards through space and time as it tours a large circular path. The bubble moves through space-time at speeds greater than the speed of light at times, allowing it to move backward in time.
via Science Daily
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Cassini spacecraft dives between Saturn and its rings

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NASA's Cassini spacecraft is back in contact with Earth after its successful first-ever dive through the narrow gap between the planet Saturn and its rings on April 26, 2017.
via Science Daily
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Engineers investigate a simple, no-bake recipe to make bricks from Martian soil

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Explorers planning to settle on Mars might be able to turn the planet's soil into bricks without needing to use an oven or additional ingredients. Instead, they would need to apply pressure to compact the soil--the equivalent of a blow from a hammer.
via Science Daily
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Lyrids in Southern Skies

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Earth's annual Lyrid meteor shower peaked before dawn on April 22nd, as our fair planet plowed through dust from the tail of long-period comet Thatcher. Seen from the high, dark, and dry Atacama desert a waning crescent Moon and brilliant Venus join Lyrid meteor streaks in this composited view. Captured over 5 hours on the night of April 21/22, the meteors stream away from the shower's radiant, a point not very far on the sky from Vega, alpha star of the constellation Lyra. The radiant effect is due to perspective as the parallel meteor tracks appear to converge in the distance. In the foreground are domes of the Las Campanas Observatory housing (left to right) the 2.5 meter du Pont Telescope and the 1.3 meter Optical Gravitational Lensing Experiment (OGLE) telescope.

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Wednesday, 26 April 2017

Seeing is believing: Diamond quantum sensor reveals current flows in next-gen materials

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In a world-first, researchers have imaged electrons moving in graphene using a quantum probe found only in diamonds. The technique could be used to understand electron behavior and allow researchers to improve the reliability and performance of existing and emerging technologies. These images could reveal the microscopic behavior of currents in quantum computing devices, graphene and other 2-D materials, and be used to develop next generation electronics, energy storage (batteries), flexible displays and bio-chemical sensors.
via Science Daily

New atomically layered, thin magnet discovered

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An unexpected magnetic property in a 2-D material has been found by scientists. The new atomically thin, flat magnet could have major implications for a wide range of applications, such as nanoscale memory, spintronic devices, and magnetic sensors, they say.
via Science Daily

Physicists design 2-D materials that conduct electricity at almost the speed of light

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New two-dimensional quantum materials have been created with breakthrough electrical and magnetic attributes that could make them building blocks of future quantum computers and other advanced electronics. The researchers explored the physics behind the 2-D states of novel materials and determined they could push computers to new heights of speed and power.
via Science Daily

Scientists propose mechanism to describe solar eruptions of all sizes

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From long jets to massive explosions of solar material and energy, eruptions on the sun come in many shapes and sizes. Scientists now propose that a universal mechanism can explain the whole spectrum of solar eruptions.
via Science Daily
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Cassini's first grand finale dive: Milestones

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NASA's Cassini spacecraft is set to make its first dive through the narrow gap between Saturn and its rings on April 26, 2017.
via Science Daily
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