Extended Data Fig. 1: Position–velocity diagram.

a, b, The blue points in a are as in Fig. 1 and the orange points in b represent the predicted positions of the blue points as if they were following a ‘universal’ Galactic rotation curve²². The line segments represent 1σ errors, derived from a Gaussian fitting for the observed velocities and the distance uncertainties for the predicted velocities, and are generally smaller than the symbols. The quasi-linear arrangement in velocity of the Radcliffe Wave complexes suggests that the structure is not a random alignment of molecular cloud complexes, but a kinematically coherent structure. The tentative decoupling between observed and predicted velocities also indicate that the Radcliffe Wave is a kinematically coherent structure. VLSR, velocity in the local-standard-of-rest frame.