"Was Ceti Alpha 5 a really crummy planet? Please forgive me trekkies/trekkers. I know I have sinned."
You have; it was. Ceti Alpha 5 is the planet Kirk marooned Khan on during the original series. It was a decent, if hard, planet at the time, but due to some solar-system voodoo (I forget the exact explanation) the planet was transformed into a horrendous desert planet. By the time the USS Reliant (with Chekov on board) finds Khan there at the start of Wrath of Khan, the planet is practically lifeless (the only living things are the handful of survivors of Khan's crew, and some nastly slug-like things).
- Ash
~SDC~