Mars' Axial Tilt and Gully Formation

This chapter discusses the formation of gullies on Mars and emphasizes the significance of the planet's axial tilt. The paper suggests that an axial tilt of at least 35 degrees is necessary for gully formation, and they conducted modeling experiments to support their findings. Furthermore, they highlight the correlation between the presence of gullies and the occurrence of liquid water on Mars around 630,000 years ago. The chapter concludes with a break and a promotion for the Planetary Society's Shoemaker-Neo grants that fund research on near-Earth objects.