Researchers say that the iconic painting's swirling sky lines up with Kolmogorov's theory of turbulence, suggesting that the artist was a careful observer of the world around him

Exhibition at London's National Gallery features a 'stunning array' of paintings from the last two years of the artist's life

Sometimes a party can fall flat and fizzle out. Not this bash, billed as the “chief” celebration of the National Gallery’s bicentenary. If the paintings in Van Gogh: Poets & Lovers were pieces of music – and,