Relic neutrinos join the hunt for dark energy


By Stephen Battersby MASSIVE optical telescopes on mountain tops have been the main tools for exploring dark energy – the mysterious stuff that is accelerating the expansion of the universe. Soon the quest could move underground. Neutrinos born in stellar cataclysms and detected in gigantic water tanks buried in mines may become the new probes for dark energy. Dark energy was discovered in the late 1990s by astronomers studying the light from stellar explosions known as type 1a supernovae. Since then telescopes around the world, such as the Very Large Telescope on Cerro Paranal in Chile,
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