Starlink satellites can become extremely bright when sunlight reflects specularly to an observer on the ground. The observed brightness of such flares is consistent with a bidirectional reflectance function of the Starlink satellite chassis. These findings are applied to the case of an extreme flare that was reported as an Unidentified Aerial Phenomena by the pilots of two commercial aircraft.
@article{arxiv.2405.13091,
title = {Extreme Flaring of Starlink Satellites},
author = {Anthony Mallama and Richard E. Cole},
journal= {arXiv preprint arXiv:2405.13091},
year = {2024}
}