The American southwest is littered with slot canyons – deep, narrow passages worn through by the erosive force of water. But there’s another place in the solar system with this majestic geology: Saturn’s moon, Titan.

“Titan’s canyons are wider, generally deeper, and have slightly more sloping walls (than Earth),” says Tracy Gregg, a geologist at the University of Buffalo in New York.

Gregg presented her research on Titan’s slot canyons last week at the Lunar and Planetary Science Confe