ESOcast 56: Gentle Giants in the Desert

Michael500ca
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For our newest ESOcast, we pose this puzzle: how do you move a 100-tonne giant ALMA antenna 30 kilometres up onto the oxygen-starved Chajnantor Plateau, 5000 metres above sea level and finish the job with millimetre precision?

Credit: ALMA (ESO/NAOJ/NRAO)

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