Four British astronomers celebrate 50 years of work and friendship by going on a road trip through the southwestern United States to revisit some great observatories. Show more
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Four British astronomers celebrate 50 years of work and friendship by going on a road trip through the southwestern United States to revisit some great observatories. Show more
BBC Four reflects arts, music and culture with an ambitious range of intellectually and culturally enriching programmes, taking an expert and in-depth approach to its subjects.
