Geochemistry and Cosmochemistry of potassium stable isotopes
https://www.sciencedirect.com/science/article/abs/pii/S0009281921000489
The similarity of the interstellar comet 2I/Borisov to solar system comets from high resolution optical spectroscopy
https://arxiv.org/abs/2106.04431
ET Probes: Looking Here as Well as There
https://arxiv.org/abs/1609.04635