Where is the strongest cosmic-ray observatory for the southern hemisphere located?
Quick Answer
The Pierre Auger Observatory in Argentina is a major cosmic-ray observatory for the southern hemisphere. It is the largest facility of its kind in the world.
The Full Story
The Pierre Auger Observatory in Mendoza Province, Argentina, is especially important for observing ultra-high-energy cosmic rays in the southern sky. Its huge detector array allows scientists to study particles that strike the atmosphere with extraordinary energy. Because cosmic rays are rare at the highest energies, a large area is needed to catch enough events. The observatory has helped improve understanding of the sources and composition of these particles.
Key Facts
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"A giant desert detector watching the most powerful particles in nature."
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