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Parkes radio telescope

CAUGHT IN THE ACT  Five more fast radio bursts have been detected at the Parkes radio telescope in Australia, shown here.

illustration of cosmic rays showering Earth

SUBATOMIC SHOWERS  Earth is perpetually pelted by cosmic rays, which trigger cascading showers of subatomic particles (illustrated) when they hit the atmosphere. 

supernova explosion illustration

KABOOM  A huge supernova explosion, or hypernova (as seen in this artist’s illustration), could have spawned some of the galaxy’s oldest stars, which researchers found orbiting the Milky Way’s central bulge. 

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