Well, it should be obvious that these are radioactive. You don't want to be here without the relevant protective filters on your suit. Ordinary radiation protection will not do. You'll need superior protection, such as Mutavisk Armor. Plants manage to grow here, and life manages to flourish. So it can't be ALL bad, right? These planets tend to be quite rich in Uranium and are the only place you can find Irradium.
Codex description Edit
Irradiated world. Dense pockets of lethal radiation, and large quantities of Irradium ore detected. Recommend: Severe Radiation protection.
This unusual irradiated world should not be visited without extreme radiation protection. Irradium ore detected. Recommend: Severe Radiation protection.
Mutated trees and bizzare fauna are abundant on this irradiated planet. Recommend: Severe Radiation protection.
Possible Weather Edit
Anti-Gravity Rain, Light Anti-Gravity Rain, Algae Rain, Fog, Acid Rain, Small Meteorites.