The obliquity and eccentricity of 67P/Churyumov-Gerasimenko's orbit result in more particles being released from the nucleus during the southern summer (Thomas et al., 2015)

that explains the smooth terraces found in the northern hemisphere (Birch et al · 2017

1 Pith paper cite this work. Polarity classification is still indexing.

1 Pith paper citing it