The solar chemical composition is an important ingredient in our understanding of the
formation, structure, and evolution of both the Sun and our Solar System. Furthermore, it is
an essential reference standard against which the elemental contents of other astronomical
objects are compared. In this review, we evaluate the current understanding of the solar
photospheric composition. In particular, we present a redetermination of the abundances of
nearly all available elements, using a realistic new three-dimensional (3D), time-dependent�…