Cargo pods break when hitting the surface of planets. You need landing pads! Ensures a fresh start on each planet.
I've started maintaining a new mod that kind of supersedes this one. It's a bit of a breaking change though, which is why I chose not to replace this one.
https://mods.factorio.com/mod/cargo-pod-requires-research
Changelog
0.1.0 - Pods can now safely land on Aquilo without a cargo pad.