Oseidon

From TARDIS Index File, the free Doctor Who reference.

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Oseidon
Other names:
Type:	Planet
Location:	Mutter's Spiral
Natives:	Kraals
Appearances:	DW: The Android Invasion

Oseidon was a barren, desert-covered planet located in Mutter's Spiral. Though similar to Earth in terms of gravity and atmosphere, it has some of the highest levels of radiation in the galaxy. This radiation became increasing more powerful as time went on, forcing the native Kraals to search for a new home. (DW: The Android Invasion)