SPACE. BUBBLES.
Mysterious ‘galactic nuclear superbubbles’ are likely to be one of the sources of ‘cosmic rays’ which ‘bombard’ Earth, Nasa has announced.
Galactic nuclear bubbles are believed to be formed by the ‘cosmic wind’ emitted by clumps of young stars burning bright and strong. Luckily, Earth is protected from the full strength of cosmic rays by its atmosphere and magnetic field. ‘Scientists think charged particles scatter or bounce off tangled magnetic fields in these shock waves, much like balls rebounding off bumpers in a pinball machine,’ Nasa continued.
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