  Population III supernovae have been the focus of growing attention because of
their potential to directly probe the properties of the first stars,
particularly the most energetic events that can be seen at the edge of the
observable universe. But until now pair-pulsation supernovae, in which
explosive thermonuclear burning in massive stars fails to unbind them but can
eject their outer layers into space, have been overlooked as cosmic beacons at
the earliest redshifts. These shells can later collide and, like Type IIn
supernovae, produce superluminous events in the UV at high redshifts that could
be detected in the near infrared today. We present numerical simulations of a
110 M$_{\odot}$ pair-pulsation explosion done with the Los Alamos radiation
hydrodynamics code RAGE. We find that collisions between consecutive pair
pulsations are visible in the near infrared out to z $\sim$ 15 - 20 and can
probe the earliest stellar populations at cosmic dawn.
