(Chiefly in science fiction) a landing or arrival on a planet after a journey through space.
- All freighters currently en route between worlds are exempt from this fine until their next planetfall, but any ship that launches toward another PA-member world will be required to carry mail to its next destination.
- You know, I only just made planetfall a few hours ago.
- I for one, don't want to still be on this ship, if it makes planetfall.
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