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Station-bound instrument to open new chapter in the story of cosmic rays

9 August 2017 Stephen Clark

Physicists are gearing up to send a re-engineered science instrument originally designed for lofty balloon flights high in Earth’s atmosphere to the International Space Station next week to broaden their knowledge of cosmic rays, subatomic particles traveling on intergalactic routes that could hold the key to unlocking mysteries about supernovas, black holes, pulsars and dark matter.

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Is dark matter “fuzzy”?

2 May 2017 Astronomy Now

Astronomers have used data from NASA’s Chandra X-ray Observatory to study the properties of dark matter, the mysterious, invisible substance that makes up a majority of matter in the universe. The study, which involves 13 galaxy clusters, explores the possibility that dark matter may be more “fuzzy” than “cold,” perhaps even adding to the complexity surrounding this cosmic conundrum.

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Mystery of ultra-diffuse faint galaxies solved

29 November 2016 Astronomy Now

Over the last year, researchers have observed some very faint, diffuse galaxies. These so-called ultra-diffuse galaxies (UDGs) are as faint as dwarf galaxies but are distributed over an area just as large as the Milky Way. Now, a solution to the mystery of how such galaxies form has been found.

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Grid computing to tackle the mystery of the dark universe

26 November 2016 Astronomy Now

Scientists from the University of Manchester working on the revolutionary Large Synoptic Survey Telescope project have harnessed the power of distributed computing from the UK’s GridPP collaboration to tackle one of the universe’s biggest mysteries — the nature of dark matter and dark energy.

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Record-breaking dwarf satellite galaxy of the Milky Way discovered

21 November 2016 Astronomy Now

An international team has found an extremely faint dwarf satellite galaxy of the Milky Way using the Hyper Suprime-Cam (HSC) on the 8.2-metre Subaru Telescope located at the Mauna Kea Observatory on Hawaii. Named Virgo I, the galaxy lies 280,000 light-years away in the constellation of Virgo. The galaxy may well be the faintest satellite galaxy yet found.

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New theory of gravity might explain dark matter

8 November 2016 Astronomy Now

Emergent gravity is a new theory that might explain the curious motions of stars in galaxies. It predicts the exact same deviation of motions that is usually explained by invoking dark matter. Professor Erik Verlinde, renowned expert in string theory, publishes a new research paper today in which he expands his groundbreaking views on the nature of gravity.

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Supercomputer comes up with profile of dark matter

3 November 2016 Astronomy Now

In the search for the mysterious dark matter, physicists have used elaborate computer calculations to come up with an outline of the particles of this unknown form of matter. The scientists extended the successful Standard Model of particle physics which allowed them, among other things, to predict the mass of so-called axions, promising candidates for dark matter.