BRITE (BRIght Target Explorer) Constellation is a space astronomy mission to collect high-quality, time-dependent, dual-filter, optical photometry of bright stars with a set of nanosatellites, operated simultaneously by an international team of scientists and engineers. The scientific strength of BRITE Constellation is the ability to monitor at high photometric precision many of the apparently brightest stars in the night sky with sampling comparable to a BRITE nanosatellite orbital period (~100 minutes) for months or even years.