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Date Taken:

December 5, 2008

Photograph By:

Lisa Harding, NSF

Liquid helium is shipped to the South Pole to cool telescopes to almost absolute zero temperatures. The sensors used by the instruments must be super-cooled because they are looking for miniscule temperature fluctuations in the cosmic microwave background radiation.

Associated Keywords

Astrophysics, Cargo, Cosmic Microwave Background, Cosmology, Cryogenics, Kelvin, Liquid Helium, NSF, Physics, Pole, South Pole, Telescope

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