Journey into Spain's Cave Paintings with Expert

For tens of thousands of years, Palaeolithic cave paintings in Spain remained unseen. A leading expert guides a journey to these astonishing artworks, rediscovered for their vivid beauty.

Starwatch: Ophiuchus the serpent bearer

Spot the large constellation Ophiuchus this week as the nearly full moon sits in Sagittarius's teapot. The constellation has differing classical backstories.

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