  In this work, we analyze the behavior of light and matter as they pass near
and through a traversable wormhole. In particular, we study the trajectories of
massive and massless particles and the dust accretion around a traversable
wormhole previously reported in Eur. Phys. J. C \textbf{82} (2022) no.7, 605.
For massive particles, we integrate the trajectory equation for ingoing and
outgoing geodesics and classify the orbits of particles scattered by the
wormhole in accordance with their asymptotic behavior far from the throat. We
represent all the time--like trajectories in an embedding surface where it is
shown explicitly the trajectories of i) particles that deviate from the throat
and remain in the same universe, ii) particles that traverse the wormhole to
another universe, and iii) particles that get trapped in the wormhole in
unstable circular orbits. For the massless particles, we numerically integrate
the trajectory equation to show the ray-tracing around the wormhole specifying
the particles that traverse the wormhole and those that are only deviated by
the throat. For the study of accretion, we consider the steady and spherically
symmetric accretion of dust. Our results show that the wormhole parameters can
significantly affect the behavior of light and matter near the wormhole. Some
comparisons with the behavior of matter around black holes are made.
