ISS Astronauts are fixing a particle physics detector in space

Astronauts on the International Space Station (ISS) are attempting to fix an “unserviceable” instrument which could provide insights into the nature of dark matter and many other cosmic questions. The Alpha Magnetic Spectrometer was installed in 2011 and was only supposed to last for three years, so it was never designed to be serviced by astronauts. But the instrument proved so valuable that the ISS crew are taking on the challenge of fixing its cooling system anyway.

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