Scientists are deploying vast arrays on Earth to search for the origin of the most energetic particles in the universe.

Press Reviews
Ultrahigh-energy cosmic rays twist and turn on their way to Earth, which has made it nearly impossible to identify the colossal monsters that create them. by Natalie Walchover
Science Corner – Women hold up half the sky
The observatory has made detailed information about an initial selection of its recorded cosmic-ray events available for outside scientists to use.
In the last few decades, Argentina and Chile have proven themselves prime spots for astronomical observation — a status that has been a boon in many ways for both countries.
A new article on UHECRs has appeared in Physics World
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