  Vincent van Gogh's painting, The Starry Night, is an iconic piece of art and
cultural history. The painting portrays a night sky full of stars, with eddies
(spirals) both large and small. \cite{Kolmogorov1941}'s description of
subsonic, incompressible turbulence gives a model for turbulence that involves
eddies interacting on many length scales, and so the question has been asked:
is The Starry Night turbulent? To answer this question, we calculate the
azimuthally averaged power spectrum of a square region ($1165 \times 1165$
pixels) of night sky in The Starry Night. We find a power spectrum,
$\mathcal{P}(k)$, where $k$ is the wavevector, that shares the same features as
supersonic turbulence. It has a power-law $\mathcal{P}(k) \propto
k^{-2.1\pm0.3}$ in the scaling range, $34 \leq k \leq 80$. We identify a
driving scale, $k_\text{D} = 3$, dissipation scale, $k_\nu = 220$ and a
bottleneck. This leads us to believe that van Gogh's depiction of the starry
night closely resembles the turbulence found in real molecular clouds, the
birthplace of stars in the Universe.

Popular Physics;Fluid Dynamics