The Journey, in the company of astrophysicist Gaspar Galaz, visits one of the most important astronomical observatories in the world, located in the Atacama Desert. And we find out that there is a threat to observe the planets, a real risk to the future of a science that helps to develop knowledge in other sciences. It is light contamination, provoked by an excess of light as a result of urbanisation. From there, in another part of the desert, we learn how Chilean scientists developed a technology based on a 1,500-year-old ancestral tradition, used by the ancient inhabitants of the region...
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