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Fast radio bursts born in cosmic cataclysms

15 November 2016 Astronomy Now

Fast radio bursts (FRBs) were first discovered in 2007, and in the years since radio astronomers have detected a few dozen of these events. Researchers have found that these mysterious “cosmic whistles” can release a billion times more energy in gamma-rays than they do in radio waves, rivalling supernovae in their explosive power.

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ALMA spots monstrous baby galaxies cradled in dark matter

6 December 2015 Astronomy Now

Astronomers using the Atacama Large Millimetre/submillimetre Array (ALMA) have discovered a nest of colossal baby galaxies 11.5 billion light-years away. The young galaxies seem to reside at the junction of gigantic filaments in a web of dark matter. These findings are important for understanding how enormous galaxies like these are formed and how they evolve into huge elliptical galaxies.