Deploying a telescope in space is one thing. Making two of them deep under the sea is a task in a league of its own.
On a ship bobbing in the Mediterranean Sea, physicists — not typically known for their sea legs — brave weeklong voyages and rough waters, working around the clock to deploy the telescopes’ detectors.
The telescopes are designed to detect not light, but neutrinos. These subatomic particles are spewed at high energies from mysterious, unidentified realms of space. But such high-energy neutrinos are so rare, and so stealthy, that the detectors that study them must be enormous. So scientists are outfitting a cubic kilometer of
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