A new theory may finally unveil their origin. Ultra-high-energy cosmic rays (UHECRs) surpass in power anything humans can produce in laboratories. Their discovery dates back over 60 years, but their ...

May 15, 2025 — Humans perceive and navigate the world around us with the help of our five senses: sight, hearing, touch, taste and smell. And while scientists have long known that these ...

Abstract: In June 2006 an early opportunity arose to compare occultation-based electron density profiles with incoherent scatter radar data. The former were made available by the constellation of ...

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