Listening for the Universe's Faintest Whispers, a Billion Supernovae at Once
Scientists at the Super-Kamiokande observatory in Japan are analyzing data to detect the 'Diffuse Supernova Neutrino Background,' a faint signal from historical supernovae. This research aims to better understand the history of star formation and death across the universe.
Why it matters
Detecting these elusive particles provides a new observational window into the evolution of the cosmos.
How do you listen for something quieter than almost anything else in nature, a signal built from ghostly particles that pass straight through solid rock without so much as slowing down? A thousand metres beneath Gifu Prefecture in Japan, an international team working at the Super-Kamiokande observatory believes they may have caught the very first hint of exactly that.
The Crab Nebula, the glowing remains of a star that exploded as a supernova nearly a thousand years ago. Every such explosion floods space with a burst of neutrinos, that scientists believe they may now be catching the faint, combined echo of (Credit : NASA/ESA)
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