Thursday 10 August 2017

Galactic winds push researchers to probe galaxies at unprecedented scale

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After using the Titan supercomputer at Oak Ridge National Laboratory to rule out a potential mechanism for galactic wind, astrophysicists are aiming to generate nearly a trillion-cell simulation of an entire galaxy, which would be the largest simulation of a galaxy ever.
via Science Daily
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Why massive galaxies don't dance in crowds

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Scientists have discovered why heavyweight galaxies living in a dense crowd of galaxies tend to spin more slowly than their lighter neighbors. Contrary to earlier thinking, the spin rate of the galaxy is determined by its mass, rather than how crowded its neighborhood is.
via Science Daily
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Night of the Perseids

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This weekend, meteors will rain down near the peak of the annual Perseid Meteor Shower. Normally bright and colorful, the Perseid shower meteors are produced by dust swept up by planet Earth from the orbit of Comet Swift-Tuttle. They streak from a radiant in Perseus, above the horizon in clear predawn skies. Despite interfering light from August's waning gibbous moon, this year's Perseids will still be enjoyable, especially if you can find yourself in an open space, away from city lights, and in good company. Frames used in this composite view capture bright Perseid meteors from the 2016 meteor shower set against a starry background along the Milky Way, with even the faint Andromeda Galaxy just above center. In the foreground, astronomers of all ages have gathered on a hill above the Slovakian village of Vrchtepla.

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New observations of Crab Nebula and Pulsar reveal polarized emissions

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New observations of polarised X-rays from the Crab Nebula and Pulsar may help explain sudden flares in the Crab’s X-ray intensity, as well as provide new data for modeling – and understanding – the nebula.
via Science Daily
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Hunting season at the LHC

Preserving the stress of volcanic uprise on Mars

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An ancient mountain range on Mars preserves a complex volcanic and tectonic past imprinted with signs of water and ice interactions. 


via ESA Space Science
http://www.esa.int/Our_Activities/Space_Science/Mars_Express/Preserving_the_stress_of_volcanic_uprise_on_Mars