From the Nature article[1], despite being prominent in the abstract it's almost a throwaway in the body: > ... Moon’s Vallis Schrödinger and Vallis Planck were

From the Nature article[1], despite being prominent in the abstract it's almost a throwaway in the body: > ... Moon’s Vallis Schrödinger and Vallis Planck were carved by streams of impacting rock in less than 10 min. and earlier in the same article: > Flight times of debris producing the 270 km-long main canyon are 4.9 to 15.0 min for Vallis Schrödinger over the entire range of potential ejection angles, with canyon-forming secondary impacts occurring within a 5 min interval. Flight times of debris producing the 280 km-long main canyon are 5.2 to 15.4 min for Vallis Planck over the entire range of potential ejection angles, with canyon-forming secondary impacts occurring within a 5 min interval. I didn't dig all the way into how we get 10 minutes from 4.9-15 minutes. I was very interested in how this time was so confidently bounded. I'm guessing it's the graph that charts impact sizes, distances, and energies to assume flight travel time from a point of impact. I'm also annoyed at the shift from "min" to "minutes" during the article. That just seems like really bad editing. [1] https://www.nature.com/articles/s41467-024-55675-z https://www.nature.com/articles/s41467-024-55675-z